Finding the Fourth Proportional to 2,626.82, 3,939.02 and 777.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,626.82 : 3,939.02 = 777.27 : x
2. Step 2: Convert to fraction form
   2,626.82/3,939.02 = 777.27/x
3. Step 3: Cross multiply
   2,626.82x = 3,939.02 × 777.27
4. Step 4: Simplify right side
   2,626.82x = 3,061,682.08
5. Step 5: Solve for x
   x = 3,061,682.08/2,626.82
6. Step 6: Final answer
   x = 1,165.55