Finding the Fourth Proportional to 2,042.55, 2,818.35 and 1,158.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.55 : 2,818.35 = 1,158.12 : x
2. Step 2: Convert to fraction form
   2,042.55/2,818.35 = 1,158.12/x
3. Step 3: Cross multiply
   2,042.55x = 2,818.35 × 1,158.12
4. Step 4: Simplify right side
   2,042.55x = 3,263,987.50
5. Step 5: Solve for x
   x = 3,263,987.50/2,042.55
6. Step 6: Final answer
   x = 1,598.00