Finding the Fourth Proportional to 2,449.89, 3,675.42 and 718.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,449.89 : 3,675.42 = 718.50 : x
2. Step 2: Convert to fraction form
   2,449.89/3,675.42 = 718.50/x
3. Step 3: Cross multiply
   2,449.89x = 3,675.42 × 718.50
4. Step 4: Simplify right side
   2,449.89x = 2,640,789.27
5. Step 5: Solve for x
   x = 2,640,789.27/2,449.89
6. Step 6: Final answer
   x = 1,077.92