Finding the Fourth Proportional to 2,689.48, 3,711.48 and 1,510.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,689.48 : 3,711.48 = 1,510.55 : x
2. Step 2: Convert to fraction form
   2,689.48/3,711.48 = 1,510.55/x
3. Step 3: Cross multiply
   2,689.48x = 3,711.48 × 1,510.55
4. Step 4: Simplify right side
   2,689.48x = 5,606,363.10
5. Step 5: Solve for x
   x = 5,606,363.10/2,689.48
6. Step 6: Final answer
   x = 2,084.56