Finding the Fourth Proportional to 2,055.17, 3,085.49 and 960.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,055.17 : 3,085.49 = 960.31 : x
2. Step 2: Convert to fraction form
   2,055.17/3,085.49 = 960.31/x
3. Step 3: Cross multiply
   2,055.17x = 3,085.49 × 960.31
4. Step 4: Simplify right side
   2,055.17x = 2,963,015.80
5. Step 5: Solve for x
   x = 2,963,015.80/2,055.17
6. Step 6: Final answer
   x = 1,441.74