Finding the Fourth Proportional to 2,055.62, 3,082.35 and 959.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,055.62 : 3,082.35 = 959.78 : x
2. Step 2: Convert to fraction form
   2,055.62/3,082.35 = 959.78/x
3. Step 3: Cross multiply
   2,055.62x = 3,082.35 × 959.78
4. Step 4: Simplify right side
   2,055.62x = 2,958,377.88
5. Step 5: Solve for x
   x = 2,958,377.88/2,055.62
6. Step 6: Final answer
   x = 1,439.17