Step 1:
The first step to converting 1858531.123432 to a fraction is to re-write 1858531.123432 in the form p/q where p and q are both positive integers. To start with, 1858531.123432 can be written as simply 1858531.123432/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 1858531.123432, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 1858531.123432/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 1858531.123432/1 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 1858531.123432 as a fraction:
1858531/1 / 1