Finding the Fourth Proportional to 1,734.88, 2,585.84 and 1,688.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,734.88 : 2,585.84 = 1,688.72 : x
2. Step 2: Convert to fraction form
   1,734.88/2,585.84 = 1,688.72/x
3. Step 3: Cross multiply
   1,734.88x = 2,585.84 × 1,688.72
4. Step 4: Simplify right side
   1,734.88x = 4,366,759.72
5. Step 5: Solve for x
   x = 4,366,759.72/1,734.88
6. Step 6: Final answer
   x = 2,517.04