Finding the Fourth Proportional to 2,277.72, 3,417.06 and 960.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,277.72 : 3,417.06 = 960.72 : x
2. Step 2: Convert to fraction form
   2,277.72/3,417.06 = 960.72/x
3. Step 3: Cross multiply
   2,277.72x = 3,417.06 × 960.72
4. Step 4: Simplify right side
   2,277.72x = 3,282,837.88
5. Step 5: Solve for x
   x = 3,282,837.88/2,277.72
6. Step 6: Final answer
   x = 1,441.28