Finding the Fourth Proportional to 2,711.94, 4,067.55 and 764.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,711.94 : 4,067.55 = 764.31 : x
2. Step 2: Convert to fraction form
   2,711.94/4,067.55 = 764.31/x
3. Step 3: Cross multiply
   2,711.94x = 4,067.55 × 764.31
4. Step 4: Simplify right side
   2,711.94x = 3,108,869.14
5. Step 5: Solve for x
   x = 3,108,869.14/2,711.94
6. Step 6: Final answer
   x = 1,146.36