Finding the Fourth Proportional to 926,393.31, 1,388,626.61 and 358,164.72

Step by Step Solution

1. Step 1: Write the proportion equation
   926,393.31 : 1,388,626.61 = 358,164.72 : x
2. Step 2: Convert to fraction form
   926,393.31/1,388,626.61 = 358,164.72/x
3. Step 3: Cross multiply
   926,393.31x = 1,388,626.61 × 358,164.72
4. Step 4: Simplify right side
   926,393.31x = 497,357,059,164.38
5. Step 5: Solve for x
   x = 497,357,059,164.38/926,393.31
6. Step 6: Final answer
   x = 536,874.62