Finding the Fourth Proportional to 2,724.05, 4,086.21 and 776.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,724.05 : 4,086.21 = 776.41 : x
2. Step 2: Convert to fraction form
   2,724.05/4,086.21 = 776.41/x
3. Step 3: Cross multiply
   2,724.05x = 4,086.21 × 776.41
4. Step 4: Simplify right side
   2,724.05x = 3,172,574.31
5. Step 5: Solve for x
   x = 3,172,574.31/2,724.05
6. Step 6: Final answer
   x = 1,164.65