Finding the Fourth Proportional to 647,019.50, 892,890.42 and 375,248.50

Step by Step Solution

1. Step 1: Write the proportion equation
   647,019.50 : 892,890.42 = 375,248.50 : x
2. Step 2: Convert to fraction form
   647,019.50/892,890.42 = 375,248.50/x
3. Step 3: Cross multiply
   647,019.50x = 892,890.42 × 375,248.50
4. Step 4: Simplify right side
   647,019.50x = 335,055,790,769.37
5. Step 5: Solve for x
   x = 335,055,790,769.37/647,019.50
6. Step 6: Final answer
   x = 517,844.97