Finding the Fourth Proportional to 2,826.10, 4,234.37 and 1,728.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,826.10 : 4,234.37 = 1,728.16 : x
2. Step 2: Convert to fraction form
   2,826.10/4,234.37 = 1,728.16/x
3. Step 3: Cross multiply
   2,826.10x = 4,234.37 × 1,728.16
4. Step 4: Simplify right side
   2,826.10x = 7,317,668.86
5. Step 5: Solve for x
   x = 7,317,668.86/2,826.10
6. Step 6: Final answer
   x = 2,589.32