Finding the Fourth Proportional to 2,107.96, 3,162.26 and 682.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,107.96 : 3,162.26 = 682.72 : x
2. Step 2: Convert to fraction form
   2,107.96/3,162.26 = 682.72/x
3. Step 3: Cross multiply
   2,107.96x = 3,162.26 × 682.72
4. Step 4: Simplify right side
   2,107.96x = 2,158,938.15
5. Step 5: Solve for x
   x = 2,158,938.15/2,107.96
6. Step 6: Final answer
   x = 1,024.18