If I have scaled font disproportionally, how do I restore font to it's original proportions?

I'm not looking to restore font to it's original size, just it's original proportions.

I assume you scaled a text object.
Select it, open the xml editor (Shift+Ctrl+X),
type into the transform field the scale value you would like the text to have in both directions, and set it.

oh i see

i can delete this below to restore it to is original proportions (and size)

matrix(2.9525238,0,0,1,-131.13943,0)

thanks

Now I get it too, by rescaling you mirrored the text.
Then you could try changing that matrix field to:
scale (2.9525238,2.9525238)
or to
scale (131.13943,131.13943)