Finding the Fourth Proportional to 2,632.82, 3,948.89 and 685.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,632.82 : 3,948.89 = 685.17 : x
2. Step 2: Convert to fraction form
   2,632.82/3,948.89 = 685.17/x
3. Step 3: Cross multiply
   2,632.82x = 3,948.89 × 685.17
4. Step 4: Simplify right side
   2,632.82x = 2,705,657.54
5. Step 5: Solve for x
   x = 2,705,657.54/2,632.82
6. Step 6: Final answer
   x = 1,027.67