Finding the Fourth Proportional to 863,667.50, 1,295,667.30 and 331,147

Step by Step Solution

1. Step 1: Write the proportion equation
   863,667.50 : 1,295,667.30 = 331,147 : x
2. Step 2: Convert to fraction form
   863,667.50/1,295,667.30 = 331,147/x
3. Step 3: Cross multiply
   863,667.50x = 1,295,667.30 × 331,147
4. Step 4: Simplify right side
   863,667.50x = 429,056,337,737.37
5. Step 5: Solve for x
   x = 429,056,337,737.37/863,667.50
6. Step 6: Final answer
   x = 496,784.17