Finding the Fourth Proportional to 760,661.42, 1,141,230.88 and 457,404.71

Step by Step Solution

1. Step 1: Write the proportion equation
   760,661.42 : 1,141,230.88 = 457,404.71 : x
2. Step 2: Convert to fraction form
   760,661.42/1,141,230.88 = 457,404.71/x
3. Step 3: Cross multiply
   760,661.42x = 1,141,230.88 × 457,404.71
4. Step 4: Simplify right side
   760,661.42x = 522,004,379,709.45
5. Step 5: Solve for x
   x = 522,004,379,709.45/760,661.42
6. Step 6: Final answer
   x = 686,250.63