Finding the Fourth Proportional to 2,442.60, 3,371.20 and 1,558.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,442.60 : 3,371.20 = 1,558.72 : x
2. Step 2: Convert to fraction form
   2,442.60/3,371.20 = 1,558.72/x
3. Step 3: Cross multiply
   2,442.60x = 3,371.20 × 1,558.72
4. Step 4: Simplify right side
   2,442.60x = 5,254,756.86
5. Step 5: Solve for x
   x = 5,254,756.86/2,442.60
6. Step 6: Final answer
   x = 2,151.30