Finding the Fourth Proportional to 769,131.91, 1,061,423.45 and 424,990.11

Step by Step Solution

1. Step 1: Write the proportion equation
   769,131.91 : 1,061,423.45 = 424,990.11 : x
2. Step 2: Convert to fraction form
   769,131.91/1,061,423.45 = 424,990.11/x
3. Step 3: Cross multiply
   769,131.91x = 1,061,423.45 × 424,990.11
4. Step 4: Simplify right side
   769,131.91x = 451,094,469,834.56
5. Step 5: Solve for x
   x = 451,094,469,834.56/769,131.91
6. Step 6: Final answer
   x = 586,498.19