Finding the Fourth Proportional to 929,667.55, 1,282,887.31 and 521,731.30

Step by Step Solution

1. Step 1: Write the proportion equation
   929,667.55 : 1,282,887.31 = 521,731.30 : x
2. Step 2: Convert to fraction form
   929,667.55/1,282,887.31 = 521,731.30/x
3. Step 3: Cross multiply
   929,667.55x = 1,282,887.31 × 521,731.30
4. Step 4: Simplify right side
   929,667.55x = 669,322,463,999.80
5. Step 5: Solve for x
   x = 669,322,463,999.80/929,667.55
6. Step 6: Final answer
   x = 719,958.94