Finding the Fourth Proportional to 1,688.59, 2,330.26 and 1,025.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,688.59 : 2,330.26 = 1,025.00 : x
2. Step 2: Convert to fraction form
   1,688.59/2,330.26 = 1,025.00/x
3. Step 3: Cross multiply
   1,688.59x = 2,330.26 × 1,025.00
4. Step 4: Simplify right side
   1,688.59x = 2,388,502.29
5. Step 5: Solve for x
   x = 2,388,502.29/1,688.59
6. Step 6: Final answer
   x = 1,414.50