Finding the Fourth Proportional to 2,818.86, 4,229.20 and 1,358.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,818.86 : 4,229.20 = 1,358.12 : x
2. Step 2: Convert to fraction form
   2,818.86/4,229.20 = 1,358.12/x
3. Step 3: Cross multiply
   2,818.86x = 4,229.20 × 1,358.12
4. Step 4: Simplify right side
   2,818.86x = 5,743,761.10
5. Step 5: Solve for x
   x = 5,743,761.10/2,818.86
6. Step 6: Final answer
   x = 2,037.62