Step 1:
The first step to converting 1289998.539743 to a fraction is to re-write 1289998.539743 in the form p/q where p and q are both positive integers. To start with, 1289998.539743 can be written as simply 1289998.539743/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 1289998.539743, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 1289998.539743/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 1289998.539743/1 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 1289998.539743 as a fraction:
1289998/1 / 1