Step 1:
The first step to converting 3988751.488964 to a fraction is to re-write 3988751.488964 in the form p/q where p and q are both positive integers. To start with, 3988751.488964 can be written as simply 3988751.488964/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 3988751.488964, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 3988751.488964/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 3988751.488964/1 each by 1000000:
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 3988751.488964 as a fraction:
3988751/1 / 1