OmniMount does have a mount finder tool; however, Proscan did not show up in the brand search.

Instead, I went through their advance search function and input mount dimensions and weight. While this will verify that a mount will fit the TV and hold the load, it won’t check against unforeseen interactions between the mount and inputs or ventilation.

While mainstream and most second-tier brands were present in the full search, the brand I tested was not, and that needs to factor into the rating.

http://www.omnimount.com