Finding the Fourth Proportional to 2,477,086.09, 3,418,105.48 and 1,389,133.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,477,086.09 : 3,418,105.48 = 1,389,133.78 : x
2. Step 2: Convert to fraction form
   2,477,086.09/3,418,105.48 = 1,389,133.78/x
3. Step 3: Cross multiply
   2,477,086.09x = 3,418,105.48 × 1,389,133.78
4. Step 4: Simplify right side
   2,477,086.09x = 4,748,205,785,871.11
5. Step 5: Solve for x
   x = 4,748,205,785,871.11/2,477,086.09
6. Step 6: Final answer
   x = 1,916,851.34