Finding the Fourth Proportional to 2,688.54, 3,710.17 and 1,509.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,688.54 : 3,710.17 = 1,509.61 : x
2. Step 2: Convert to fraction form
   2,688.54/3,710.17 = 1,509.61/x
3. Step 3: Cross multiply
   2,688.54x = 3,710.17 × 1,509.61
4. Step 4: Simplify right side
   2,688.54x = 5,600,909.73
5. Step 5: Solve for x
   x = 5,600,909.73/2,688.54
6. Step 6: Final answer
   x = 2,083.25