Hi David,

this is so-called reported speach, a separate grammar topic which isn't yet covered by dedicated lessons on kwiziq.

It is actually similar in English:

He said: "I am going to eat." -- Il dit "Je vais manger."
He said that he was going to eat. -- Il a dit qu'il allait manger.

Present tense in the direct speeach (I am going to eat) becomes imperfect in reported speach (he was going to eat).

I have now read the discussion of this topic at https://www.lawlessfrench.com/grammar/reported-speech/

But I see a difference here. The nearest rule says present becomes imperfect but here we have a case of future proche (is going to, i.e. will) and that rule does not say anything about that.

So then I read https://www.talkinfrench.com/french-direct-indirect-speech/ which has a more complete set of rules.

There it states: If the verb is in the future or conditional tense in the direct speech, it will be in the conditional tense in the indirect speech. (future/conditional à conditional).

That seems applicable to our sentence. Since the conditional (present) of aller is irait I think the correct translation of the entire sentence ought to be: "J'ai entendu dire qu'Isabelle irait aussi tenter sa chance à Paris."

Unfortunately not, David.

Il va manger --> Il allait manger. 

He is going to eat --> He was going to eat..

@Alan: reported speech uses tenses in a specific way which not always corresponds to English, although in this case it does. I wanted to point out the fact that this specific example is part of a larger grammatical topic which is not yet covered on kwiziq.

If you're interested, there are many references to it on the internet, e.g., this  one:

https://www.thoughtco.com/french-grammar-direct-indirect-speech-4080554

Strictly speaking you would also need the imperfect in English:

Direct speech: Someone said, "Isabelle is going to try her luck."
Indirect speech: Someone said that Isabelle was also going to try her luck.

I think you could actually use either the present or the imperfect in English, depending on whether you thought the action was still in the future. I would write either:

I've heard that Isabelle is also going to try her luck in Paris.

or

I heard that Isabelle was also going to try her luck in Paris.

Maybe it's different in French, but it seems like the translation was not quite accurate.

What can I say, Alan? It is how it is. One gets lost in the cracks of a language. It is easy to confuse what may be acceptable in the spoken language with what actually is proper English or French.

To me, the sentence "I heard that Isabelle is also going to try her luck", is actually improper English, although I concede that people may actually use it that way.

In French and English the relationship between direct and reported speech in this case is very similar:

He said: "I am going to eat." --> He said that he was going to eat.
Il a dit: "Je vais manger." --> Il a dit qu'il allait manger.

Using future tense:

He said: "I will eat tomorrow." --> He said that he would eat the next day.
Il a dit: "Je mangerai demain." --> Il a dit qu'il mangerais le lendemain.

Or past tense:

He said: "I ate yesterday." --> He said that he had eaten the previous day.
Il a dit: "J'ai mangé hier." --> Il a dit qu'il avait mangé la veille.

So Chris, would you mind giving me the answer to the supplementary question that I asked above?

>I suppose you must be right. So how would we translate this: "I've heard that Isabelle was also going to try her luck in Paris. How did she go?"?

You yourself posted the correct answer right in your question. 

J'ai entendu dire qu' Isabelle allait aussi tenter sa chance à Paris. 

But if that is the case then both of these English sentences translate to the same French sentence.

1. "I've heard that Isabelle is also going to try her luck in Paris."

2. "I've heard that Isabelle was also going to try her luck in Paris."

How can one tell what is meant?
1. Isabelle will try her luck at some future time.

2. Isabelle may already have tried her luck.

I would differentiate thus in French:

J'ai entendu dire qu'Isabelle irait aussi tenter sa chance à Paris. -- (conditionel: at a future time)
J'ai entendu dire qu'Isabelle allait aussi tenter sa chance à Paris. -- (imparfait: in the past)

To me, the English seems incorrect. If you wanted to express the future in indirect speech, you'd need tu resort to conditional in English as well:

...that Isabelle would be going to Paris. 

The English sentence is quoted directly from the Kwiziq Writing Challenge exercise.

And it sounds quite correct to me. Here is the sentence in its full context

MY POST-UNIVERSITY PLANS

What will you do after your studies? - I'll start by moving to Paris. My best friend Léa and I will rent a flat there together, and I'll start looking for a job. My parents told me they would help me in the beginning but I hope I'll soon get by on my own ! It should be easier to find a job in the capital. And I'll finally go and visit all the museums that I've always wanted to see ! I've heard that Isabelle is also going to try her luck in Paris. Maybe I'll be able to spend more time with her, I'd love to know her better. In any case, I'll invite her to our housewarming party !

I have added another comment on this on the board - the French is fine, the English is ambiguous at best, and nothing in the preceding discussion should result in the sentence remaining as 'is going to try..' rather than 'was going to try . . '. 

Hi Maarten. Was that the comment just above? Otherwise how do I access your comment?

It's ok. I found it.