Step 1:
The first step to converting 458641591.2618 to a fraction is to re-write 458641591.2618 in the form p/q where p and q are both positive integers. To start with, 458641591.2618 can be written as simply 458641591.2618/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 458641591.2618, which in this case is 4. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 458641591.2618/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 458641591.2618/1 each by 10000:
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 458641591.2618 as a fraction:
458641591/1 / 1