Step 1:
The first step to converting 3994385.4159399 to a fraction is to re-write 3994385.4159399 in the form p/q where p and q are both positive integers. To start with, 3994385.4159399 can be written as simply 3994385.4159399/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 3994385.4159399, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 3994385.4159399/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 3994385.4159399/1 each by 10000000:
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 3994385.4159399 as a fraction:
3994385/1 / 1