Finding the Fourth Proportional to 3,550.50, 4,899.78 and 1,978.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,550.50 : 4,899.78 = 1,978.56 : x
2. Step 2: Convert to fraction form
   3,550.50/4,899.78 = 1,978.56/x
3. Step 3: Cross multiply
   3,550.50x = 4,899.78 × 1,978.56
4. Step 4: Simplify right side
   3,550.50x = 9,694,508.72
5. Step 5: Solve for x
   x = 9,694,508.72/3,550.50
6. Step 6: Final answer
   x = 2,730.46