Step 1:
The first step to converting 637918.1200454 to a fraction is to re-write 637918.1200454 in the form p/q where p and q are both positive integers. To start with, 637918.1200454 can be written as simply 637918.1200454/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 637918.1200454, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 637918.1200454/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 637918.1200454/1 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 637918.1200454 as a fraction:
637918/1 / 1