Step 1:
The first step to converting 1608790.8390639 to a fraction is to re-write 1608790.8390639 in the form p/q where p and q are both positive integers. To start with, 1608790.8390639 can be written as simply 1608790.8390639/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 1608790.8390639, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 1608790.8390639/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 1608790.8390639/1 each by 10000000:
Step 3:
Now the last step is to simplify the fraction (if possible) by finding similar factors and cancelling them out, which leads to the following answer for 1608790.8390639 as a fraction:
1608790/1 / 1