Step 1:
The first step to converting 341.78998647848 to a fraction is to re-write 341.78998647848 in the form p/q where p and q are both positive integers. To start with, 341.78998647848 can be written as simply 341.78998647848/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 341.78998647848, which in this case is 11. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 341.78998647848/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 341.78998647848/1 each by 100000000000:
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 341.78998647848 as a fraction:
34179/100 / 1