Finding the Fourth Proportional to 2,055.15, 3,080.46 and 958.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,055.15 : 3,080.46 = 958.61 : x
2. Step 2: Convert to fraction form
   2,055.15/3,080.46 = 958.61/x
3. Step 3: Cross multiply
   2,055.15x = 3,080.46 × 958.61
4. Step 4: Simplify right side
   2,055.15x = 2,952,959.76
5. Step 5: Solve for x
   x = 2,952,959.76/2,055.15
6. Step 6: Final answer
   x = 1,436.86