Finding the Fourth Proportional to 2,042.42, 2,818.36 and 1,158.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.42 : 2,818.36 = 1,158.17 : x
2. Step 2: Convert to fraction form
   2,042.42/2,818.36 = 1,158.17/x
3. Step 3: Cross multiply
   2,042.42x = 2,818.36 × 1,158.17
4. Step 4: Simplify right side
   2,042.42x = 3,264,127.36
5. Step 5: Solve for x
   x = 3,264,127.36/2,042.42
6. Step 6: Final answer
   x = 1,598.17