Finding the Fourth Proportional to 2,042.15, 2,818.18 and 1,157.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.15 : 2,818.18 = 1,157.79 : x
2. Step 2: Convert to fraction form
   2,042.15/2,818.18 = 1,157.79/x
3. Step 3: Cross multiply
   2,042.15x = 2,818.18 × 1,157.79
4. Step 4: Simplify right side
   2,042.15x = 3,262,860.62
5. Step 5: Solve for x
   x = 3,262,860.62/2,042.15
6. Step 6: Final answer
   x = 1,597.76