Finding the Fourth Proportional to 2,054.61, 3,081.78 and 959.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,054.61 : 3,081.78 = 959.22 : x
2. Step 2: Convert to fraction form
   2,054.61/3,081.78 = 959.22/x
3. Step 3: Cross multiply
   2,054.61x = 3,081.78 × 959.22
4. Step 4: Simplify right side
   2,054.61x = 2,956,105.01
5. Step 5: Solve for x
   x = 2,956,105.01/2,054.61
6. Step 6: Final answer
   x = 1,438.77