Finding the Fourth Proportional to 2,655.16, 3,983.31 and 806.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,655.16 : 3,983.31 = 806.41 : x
2. Step 2: Convert to fraction form
   2,655.16/3,983.31 = 806.41/x
3. Step 3: Cross multiply
   2,655.16x = 3,983.31 × 806.41
4. Step 4: Simplify right side
   2,655.16x = 3,212,181.02
5. Step 5: Solve for x
   x = 3,212,181.02/2,655.16
6. Step 6: Final answer
   x = 1,209.79