Finding the Fourth Proportional to 743,019.42, 1,025,370.72 and 420,792.24

Step by Step Solution

1. Step 1: Write the proportion equation
   743,019.42 : 1,025,370.72 = 420,792.24 : x
2. Step 2: Convert to fraction form
   743,019.42/1,025,370.72 = 420,792.24/x
3. Step 3: Cross multiply
   743,019.42x = 1,025,370.72 × 420,792.24
4. Step 4: Simplify right side
   743,019.42x = 431,468,042,099.21
5. Step 5: Solve for x
   x = 431,468,042,099.21/743,019.42
6. Step 6: Final answer
   x = 580,695.51