Finding the Fourth Proportional to 2,689.64, 3,711.60 and 1,510.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,689.64 : 3,711.60 = 1,510.76 : x
2. Step 2: Convert to fraction form
   2,689.64/3,711.60 = 1,510.76/x
3. Step 3: Cross multiply
   2,689.64x = 3,711.60 × 1,510.76
4. Step 4: Simplify right side
   2,689.64x = 5,607,336.82
5. Step 5: Solve for x
   x = 5,607,336.82/2,689.64
6. Step 6: Final answer
   x = 2,084.79