Finding the Fourth Proportional to 1,417.43, 2,123.31 and 1,125.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,417.43 : 2,123.31 = 1,125.43 : x
2. Step 2: Convert to fraction form
   1,417.43/2,123.31 = 1,125.43/x
3. Step 3: Cross multiply
   1,417.43x = 2,123.31 × 1,125.43
4. Step 4: Simplify right side
   1,417.43x = 2,389,635.69
5. Step 5: Solve for x
   x = 2,389,635.69/1,417.43
6. Step 6: Final answer
   x = 1,685.89