Finding the Fourth Proportional to 2,042.96, 2,819.13 and 1,158.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.96 : 2,819.13 = 1,158.55 : x
2. Step 2: Convert to fraction form
   2,042.96/2,819.13 = 1,158.55/x
3. Step 3: Cross multiply
   2,042.96x = 2,819.13 × 1,158.55
4. Step 4: Simplify right side
   2,042.96x = 3,266,103.06
5. Step 5: Solve for x
   x = 3,266,103.06/2,042.96
6. Step 6: Final answer
   x = 1,598.71