Finding the Fourth Proportional to 2,655.79, 3,983.83 and 806.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,655.79 : 3,983.83 = 806.96 : x
2. Step 2: Convert to fraction form
   2,655.79/3,983.83 = 806.96/x
3. Step 3: Cross multiply
   2,655.79x = 3,983.83 × 806.96
4. Step 4: Simplify right side
   2,655.79x = 3,214,802.43
5. Step 5: Solve for x
   x = 3,214,802.43/2,655.79
6. Step 6: Final answer
   x = 1,210.49