Finding the Fourth Proportional to 1,359,808.43, 2,039,010.71 and 400,139.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359,808.43 : 2,039,010.71 = 400,139.31 : x
2. Step 2: Convert to fraction form
   1,359,808.43/2,039,010.71 = 400,139.31/x
3. Step 3: Cross multiply
   1,359,808.43x = 2,039,010.71 × 400,139.31
4. Step 4: Simplify right side
   1,359,808.43x = 815,888,338,747.33
5. Step 5: Solve for x
   x = 815,888,338,747.33/1,359,808.43
6. Step 6: Final answer
   x = 600,002.41