Finding the Fourth Proportional to 1,238,429.62, 1,857,637.14 and 396,978.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238,429.62 : 1,857,637.14 = 396,978.94 : x
2. Step 2: Convert to fraction form
   1,238,429.62/1,857,637.14 = 396,978.94/x
3. Step 3: Cross multiply
   1,238,429.62x = 1,857,637.14 × 396,978.94
4. Step 4: Simplify right side
   1,238,429.62x = 737,442,822,741.83
5. Step 5: Solve for x
   x = 737,442,822,741.83/1,238,429.62
6. Step 6: Final answer
   x = 595,466.07