Finding the Fourth Proportional to 763,109.30, 1,144,825.86 and 289,784.18

Step by Step Solution

1. Step 1: Write the proportion equation
   763,109.30 : 1,144,825.86 = 289,784.18 : x
2. Step 2: Convert to fraction form
   763,109.30/1,144,825.86 = 289,784.18/x
3. Step 3: Cross multiply
   763,109.30x = 1,144,825.86 × 289,784.18
4. Step 4: Simplify right side
   763,109.30x = 331,752,423,082.90
5. Step 5: Solve for x
   x = 331,752,423,082.90/763,109.30
6. Step 6: Final answer
   x = 434,737.75