Finding the Fourth Proportional to 2,723.86, 4,086.38 and 776.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,723.86 : 4,086.38 = 776.08 : x
2. Step 2: Convert to fraction form
   2,723.86/4,086.38 = 776.08/x
3. Step 3: Cross multiply
   2,723.86x = 4,086.38 × 776.08
4. Step 4: Simplify right side
   2,723.86x = 3,171,357.79
5. Step 5: Solve for x
   x = 3,171,357.79/2,723.86
6. Step 6: Final answer
   x = 1,164.29