Finding the Fourth Proportional to 726,273, 1,002,256.76 and 408,321

Step by Step Solution

1. Step 1: Write the proportion equation
   726,273 : 1,002,256.76 = 408,321 : x
2. Step 2: Convert to fraction form
   726,273/1,002,256.76 = 408,321/x
3. Step 3: Cross multiply
   726,273x = 1,002,256.76 × 408,321
4. Step 4: Simplify right side
   726,273x = 409,242,482,499.96
5. Step 5: Solve for x
   x = 409,242,482,499.96/726,273
6. Step 6: Final answer
   x = 563,482.99