Finding the Fourth Proportional to 743,145.90, 1,025,546.59 and 403,614.15

Step by Step Solution

1. Step 1: Write the proportion equation
   743,145.90 : 1,025,546.59 = 403,614.15 : x
2. Step 2: Convert to fraction form
   743,145.90/1,025,546.59 = 403,614.15/x
3. Step 3: Cross multiply
   743,145.90x = 1,025,546.59 × 403,614.15
4. Step 4: Simplify right side
   743,145.90x = 413,925,109,596.64
5. Step 5: Solve for x
   x = 413,925,109,596.64/743,145.90
6. Step 6: Final answer
   x = 556,990.37