Finding the Fourth Proportional to 2,629.98, 3,945.15 and 682.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,629.98 : 3,945.15 = 682.20 : x
2. Step 2: Convert to fraction form
   2,629.98/3,945.15 = 682.20/x
3. Step 3: Cross multiply
   2,629.98x = 3,945.15 × 682.20
4. Step 4: Simplify right side
   2,629.98x = 2,691,381.33
5. Step 5: Solve for x
   x = 2,691,381.33/2,629.98
6. Step 6: Final answer
   x = 1,023.35