Finding the Fourth Proportional to 2,654.92, 3,982.29 and 807.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,654.92 : 3,982.29 = 807.31 : x
2. Step 2: Convert to fraction form
   2,654.92/3,982.29 = 807.31/x
3. Step 3: Cross multiply
   2,654.92x = 3,982.29 × 807.31
4. Step 4: Simplify right side
   2,654.92x = 3,214,942.54
5. Step 5: Solve for x
   x = 3,214,942.54/2,654.92
6. Step 6: Final answer
   x = 1,210.94