Finding the Fourth Proportional to 2,632.72, 3,949.24 and 684.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,632.72 : 3,949.24 = 684.96 : x
2. Step 2: Convert to fraction form
   2,632.72/3,949.24 = 684.96/x
3. Step 3: Cross multiply
   2,632.72x = 3,949.24 × 684.96
4. Step 4: Simplify right side
   2,632.72x = 2,705,071.43
5. Step 5: Solve for x
   x = 2,705,071.43/2,632.72
6. Step 6: Final answer
   x = 1,027.48