Finding the Fourth Proportional to 2,042.28, 2,818.20 and 1,158.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.28 : 2,818.20 = 1,158.18 : x
2. Step 2: Convert to fraction form
   2,042.28/2,818.20 = 1,158.18/x
3. Step 3: Cross multiply
   2,042.28x = 2,818.20 × 1,158.18
4. Step 4: Simplify right side
   2,042.28x = 3,263,982.88
5. Step 5: Solve for x
   x = 3,263,982.88/2,042.28
6. Step 6: Final answer
   x = 1,598.21