Finding the Fourth Proportional to 1,962.52, 2,708.50 and 1,078.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,962.52 : 2,708.50 = 1,078.40 : x
2. Step 2: Convert to fraction form
   1,962.52/2,708.50 = 1,078.40/x
3. Step 3: Cross multiply
   1,962.52x = 2,708.50 × 1,078.40
4. Step 4: Simplify right side
   1,962.52x = 2,920,846.40
5. Step 5: Solve for x
   x = 2,920,846.40/1,962.52
6. Step 6: Final answer
   x = 1,488.31