Fascinated by or with?

Do I use by or with with fascinated?

Fascinated by a chance to go there
Fascinated with a chance to go there

Collins (at TFD) says...

A person can be fascinated by or with another person or thing. It is correct to speak of someone's fascination with a person or thing; one can also say a person or thing has a fascination for someone

...which doesn't actually help to distinguish which preposition to use. Although Collins says either can be used, a change in preposition usually changes the meaning.

How do I decide which of by or with to use with fascinated?

Solution 1:

One way to get an idea of how often these two are used is Ngram

This suggests that "by" is more common, but "with" is often used as well.

To do more investigation, go to that Ngram page, click on some links at the bottom and read how they were used in actual texts.