Finding the Fourth Proportional to 2,055.72, 3,084.20 and 960.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,055.72 : 3,084.20 = 960.72 : x
2. Step 2: Convert to fraction form
   2,055.72/3,084.20 = 960.72/x
3. Step 3: Cross multiply
   2,055.72x = 3,084.20 × 960.72
4. Step 4: Simplify right side
   2,055.72x = 2,963,052.62
5. Step 5: Solve for x
   x = 2,963,052.62/2,055.72
6. Step 6: Final answer
   x = 1,441.37