Finding the Fourth Proportional to 2,298.79, 3,442.69 and 1,257.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,298.79 : 3,442.69 = 1,257.24 : x
2. Step 2: Convert to fraction form
   2,298.79/3,442.69 = 1,257.24/x
3. Step 3: Cross multiply
   2,298.79x = 3,442.69 × 1,257.24
4. Step 4: Simplify right side
   2,298.79x = 4,328,287.58
5. Step 5: Solve for x
   x = 4,328,287.58/2,298.79
6. Step 6: Final answer
   x = 1,882.85