Finding the Fourth Proportional to 1,040,776.27, 1,561,271.42 and 392,898.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,040,776.27 : 1,561,271.42 = 392,898.18 : x
2. Step 2: Convert to fraction form
   1,040,776.27/1,561,271.42 = 392,898.18/x
3. Step 3: Cross multiply
   1,040,776.27x = 1,561,271.42 × 392,898.18
4. Step 4: Simplify right side
   1,040,776.27x = 613,420,699,404.02
5. Step 5: Solve for x
   x = 613,420,699,404.02/1,040,776.27
6. Step 6: Final answer
   x = 589,387.67