Finding the Fourth Proportional to 1,962.77, 2,708.55 and 1,078.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,962.77 : 2,708.55 = 1,078.56 : x
2. Step 2: Convert to fraction form
   1,962.77/2,708.55 = 1,078.56/x
3. Step 3: Cross multiply
   1,962.77x = 2,708.55 × 1,078.56
4. Step 4: Simplify right side
   1,962.77x = 2,921,333.69
5. Step 5: Solve for x
   x = 2,921,333.69/1,962.77
6. Step 6: Final answer
   x = 1,488.38