Finding the Fourth Proportional to 647,019.23, 892,890.09 and 375,248.28

Step by Step Solution

1. Step 1: Write the proportion equation
   647,019.23 : 892,890.09 = 375,248.28 : x
2. Step 2: Convert to fraction form
   647,019.23/892,890.09 = 375,248.28/x
3. Step 3: Cross multiply
   647,019.23x = 892,890.09 × 375,248.28
4. Step 4: Simplify right side
   647,019.23x = 335,055,470,501.55
5. Step 5: Solve for x
   x = 335,055,470,501.55/647,019.23
6. Step 6: Final answer
   x = 517,844.69