Finding the Fourth Proportional to 2,055.54, 3,083.78 and 959.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,055.54 : 3,083.78 = 959.31 : x
2. Step 2: Convert to fraction form
   2,055.54/3,083.78 = 959.31/x
3. Step 3: Cross multiply
   2,055.54x = 3,083.78 × 959.31
4. Step 4: Simplify right side
   2,055.54x = 2,958,296.64
5. Step 5: Solve for x
   x = 2,958,296.64/2,055.54
6. Step 6: Final answer
   x = 1,439.18