Finding the Fourth Proportional to 2,042.59, 2,818.61 and 1,158.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.59 : 2,818.61 = 1,158.53 : x
2. Step 2: Convert to fraction form
   2,042.59/2,818.61 = 1,158.53/x
3. Step 3: Cross multiply
   2,042.59x = 2,818.61 × 1,158.53
4. Step 4: Simplify right side
   2,042.59x = 3,265,438.45
5. Step 5: Solve for x
   x = 3,265,438.45/2,042.59
6. Step 6: Final answer
   x = 1,598.68