À la fin vs Au fin vs Finalement

Question

What are the differences between translating "the end" by "à la fin" or "au fin" or "finalement"?

Accepted Answer

Hi Drew, 
À la fin, means at the end of something 
It is followed by a noun as in the exercise -
à la fin du dîner = at the end of the dinner
À la fin de cette période nous trouverons une solution = We'll find a solution at the end of this period
Finalement = Finally 
Il nous a finalement dit la vérité = He has finally told us the truth
not to be confused with'
Enfin = at last 
Il nous a dit enfin la vérité = He has told us the truth at last 
Au fin doesn't exist maybe you were thinking of 'enfin'?
Hope this helps!