Step 1:
The first step to converting 2864.9861715392 to a fraction is to re-write 2864.9861715392 in the form p/q where p and q are both positive integers. To start with, 2864.9861715392 can be written as simply 2864.9861715392/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 2864.9861715392, which in this case is 10. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 2864.9861715392/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 2864.9861715392/1 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 2864.9861715392 as a fraction:
206279/72 / 1