Finding the Fourth Proportional to 2,042.42, 2,818.57 and 1,158.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.42 : 2,818.57 = 1,158.20 : x
2. Step 2: Convert to fraction form
   2,042.42/2,818.57 = 1,158.20/x
3. Step 3: Cross multiply
   2,042.42x = 2,818.57 × 1,158.20
4. Step 4: Simplify right side
   2,042.42x = 3,264,466.78
5. Step 5: Solve for x
   x = 3,264,466.78/2,042.42
6. Step 6: Final answer
   x = 1,598.34