Finding the Fourth Proportional to 2,657.27, 3,986.16 and 969.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,657.27 : 3,986.16 = 969.12 : x
2. Step 2: Convert to fraction form
   2,657.27/3,986.16 = 969.12/x
3. Step 3: Cross multiply
   2,657.27x = 3,986.16 × 969.12
4. Step 4: Simplify right side
   2,657.27x = 3,863,067.38
5. Step 5: Solve for x
   x = 3,863,067.38/2,657.27
6. Step 6: Final answer
   x = 1,453.77