Finding the Fourth Proportional to 647,748.16, 893,894.06 and 361,286.80

Step by Step Solution

1. Step 1: Write the proportion equation
   647,748.16 : 893,894.06 = 361,286.80 : x
2. Step 2: Convert to fraction form
   647,748.16/893,894.06 = 361,286.80/x
3. Step 3: Cross multiply
   647,748.16x = 893,894.06 × 361,286.80
4. Step 4: Simplify right side
   647,748.16x = 322,952,123,144.89
5. Step 5: Solve for x
   x = 322,952,123,144.89/647,748.16
6. Step 6: Final answer
   x = 498,576.68