Finding the Fourth Proportional to 2,449.62, 3,379.18 and 1,551.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,449.62 : 3,379.18 = 1,551.78 : x
2. Step 2: Convert to fraction form
   2,449.62/3,379.18 = 1,551.78/x
3. Step 3: Cross multiply
   2,449.62x = 3,379.18 × 1,551.78
4. Step 4: Simplify right side
   2,449.62x = 5,243,736.45
5. Step 5: Solve for x
   x = 5,243,736.45/2,449.62
6. Step 6: Final answer
   x = 2,140.63