Finding the Fourth Proportional to 369,496.72, 510,043.32 and 287,662.82

Step by Step Solution

1. Step 1: Write the proportion equation
   369,496.72 : 510,043.32 = 287,662.82 : x
2. Step 2: Convert to fraction form
   369,496.72/510,043.32 = 287,662.82/x
3. Step 3: Cross multiply
   369,496.72x = 510,043.32 × 287,662.82
4. Step 4: Simplify right side
   369,496.72x = 146,720,498,315.05
5. Step 5: Solve for x
   x = 146,720,498,315.05/369,496.72
6. Step 6: Final answer
   x = 397,082.01