Finding the Fourth Proportional to 911,131.42, 1,257,604.54 and 523,989.12

Step by Step Solution

1. Step 1: Write the proportion equation
   911,131.42 : 1,257,604.54 = 523,989.12 : x
2. Step 2: Convert to fraction form
   911,131.42/1,257,604.54 = 523,989.12/x
3. Step 3: Cross multiply
   911,131.42x = 1,257,604.54 × 523,989.12
4. Step 4: Simplify right side
   911,131.42x = 658,971,096,222.61
5. Step 5: Solve for x
   x = 658,971,096,222.61/911,131.42
6. Step 6: Final answer
   x = 723,244.84