Step 1:
The first step to converting 1021.6489886857 to a fraction is to re-write 1021.6489886857 in the form p/q where p and q are both positive integers. To start with, 1021.6489886857 can be written as simply 1021.6489886857/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 1021.6489886857, which in this case is 10. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 1021.6489886857/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 1021.6489886857/1 each by 10000000000:
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 1021.6489886857 as a fraction:
20433/20 / 1