Finding the Fourth Proportional to 1,962.43, 2,708.17 and 1,078.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,962.43 : 2,708.17 = 1,078.31 : x
2. Step 2: Convert to fraction form
   1,962.43/2,708.17 = 1,078.31/x
3. Step 3: Cross multiply
   1,962.43x = 2,708.17 × 1,078.31
4. Step 4: Simplify right side
   1,962.43x = 2,920,250.87
5. Step 5: Solve for x
   x = 2,920,250.87/1,962.43
6. Step 6: Final answer
   x = 1,488.08