Preposition usage

Ending a sentence in a preposition is quite acceptable in both written and spoken English these days. In very formal text, one would avoid it.

Consider, however, the alternative. The formal wording of this sentence would have to be:

You will recall that, in German, it is similar to the sound that you would get if you were to add an "e" after the vowel over which it is positioned.

Decide for yourself which version you like best. My biggest problem with this sentence is not the prepositional ending, however, it is the final "it". It is not entirely clear what is the antecedent of this pronoun. (I assume it's the accent over the vowel, but I had to think about it to figure that out).

Rommie