Finding the Fourth Proportional to 3,550.56, 4,899.72 and 1,978.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,550.56 : 4,899.72 = 1,978.92 : x
2. Step 2: Convert to fraction form
   3,550.56/4,899.72 = 1,978.92/x
3. Step 3: Cross multiply
   3,550.56x = 4,899.72 × 1,978.92
4. Step 4: Simplify right side
   3,550.56x = 9,696,153.90
5. Step 5: Solve for x
   x = 9,696,153.90/3,550.56
6. Step 6: Final answer
   x = 2,730.88