Finding the Fourth Proportional to 2,459.52, 3,687.84 and 815.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,459.52 : 3,687.84 = 815.63 : x
2. Step 2: Convert to fraction form
   2,459.52/3,687.84 = 815.63/x
3. Step 3: Cross multiply
   2,459.52x = 3,687.84 × 815.63
4. Step 4: Simplify right side
   2,459.52x = 3,007,894.50
5. Step 5: Solve for x
   x = 3,007,894.50/2,459.52
6. Step 6: Final answer
   x = 1,222.96