Finding the Fourth Proportional to 738,356.17, 1,018,931.52 and 398,824.42

Step by Step Solution

1. Step 1: Write the proportion equation
   738,356.17 : 1,018,931.52 = 398,824.42 : x
2. Step 2: Convert to fraction form
   738,356.17/1,018,931.52 = 398,824.42/x
3. Step 3: Cross multiply
   738,356.17x = 1,018,931.52 × 398,824.42
4. Step 4: Simplify right side
   738,356.17x = 406,374,772,483.72
5. Step 5: Solve for x
   x = 406,374,772,483.72/738,356.17
6. Step 6: Final answer
   x = 550,377.70