How cam can I say write: page 246, and $1,945.28?

Fractions of tens are always hyphenated thus: page two hundred forty-six. Currency is written: one thousand nine hundred dollars and twenty-eight cents. It is common for writers to use figures when the number can not be written in one or two words as so: two hundred forty-six is proper, or (with dollars) $1,945.28 is proper. It is proper to use the [$] sign instead of writing "dollars."

Numbers

How cam I say "page 246?And 1.945,28 DOLLARS ?

Page two hundred forty-six

Page two forty-six

One thousand nine hundred forty-five dollars, [and] 28 cents.

Ninteen hundred forty-five dollars, [and] 28 cents.

It's a bit strange but especially with round numbers, we use 'n-teen hundred' for x thousand, y hundred.  Example:  $1400 = fourteen hundred dollars.

Remember that Americans revers the (.) and the comma (,).