Finding the Fourth Proportional to 1,425.35, 1,966.23 and 1,238.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,425.35 : 1,966.23 = 1,238.42 : x
2. Step 2: Convert to fraction form
   1,425.35/1,966.23 = 1,238.42/x
3. Step 3: Cross multiply
   1,425.35x = 1,966.23 × 1,238.42
4. Step 4: Simplify right side
   1,425.35x = 2,435,008.73
5. Step 5: Solve for x
   x = 2,435,008.73/1,425.35
6. Step 6: Final answer
   x = 1,708.36