Finding the Fourth Proportional to 1,708.56, 2,568.24 and 1,656.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,708.56 : 2,568.24 = 1,656.72 : x
2. Step 2: Convert to fraction form
   1,708.56/2,568.24 = 1,656.72/x
3. Step 3: Cross multiply
   1,708.56x = 2,568.24 × 1,656.72
4. Step 4: Simplify right side
   1,708.56x = 4,254,854.57
5. Step 5: Solve for x
   x = 4,254,854.57/1,708.56
6. Step 6: Final answer
   x = 2,490.32