Finding the Fourth Proportional to 2,712.71, 4,067.57 and 957.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,712.71 : 4,067.57 = 957.56 : x
2. Step 2: Convert to fraction form
   2,712.71/4,067.57 = 957.56/x
3. Step 3: Cross multiply
   2,712.71x = 4,067.57 × 957.56
4. Step 4: Simplify right side
   2,712.71x = 3,894,942.33
5. Step 5: Solve for x
   x = 3,894,942.33/2,712.71
6. Step 6: Final answer
   x = 1,435.81