Finding the Fourth Proportional to 2,656.02, 3,983.82 and 807.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,656.02 : 3,983.82 = 807.15 : x
2. Step 2: Convert to fraction form
   2,656.02/3,983.82 = 807.15/x
3. Step 3: Cross multiply
   2,656.02x = 3,983.82 × 807.15
4. Step 4: Simplify right side
   2,656.02x = 3,215,540.31
5. Step 5: Solve for x
   x = 3,215,540.31/2,656.02
6. Step 6: Final answer
   x = 1,210.66