Finding the Fourth Proportional to 1,425.67, 2,139.85 and 732.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,425.67 : 2,139.85 = 732.83 : x
2. Step 2: Convert to fraction form
   1,425.67/2,139.85 = 732.83/x
3. Step 3: Cross multiply
   1,425.67x = 2,139.85 × 732.83
4. Step 4: Simplify right side
   1,425.67x = 1,568,141.43
5. Step 5: Solve for x
   x = 1,568,141.43/1,425.67
6. Step 6: Final answer
   x = 1,099.93