Finding the Fourth Proportional to 2,275.76, 3,411.39 and 959.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,275.76 : 3,411.39 = 959.88 : x
2. Step 2: Convert to fraction form
   2,275.76/3,411.39 = 959.88/x
3. Step 3: Cross multiply
   2,275.76x = 3,411.39 × 959.88
4. Step 4: Simplify right side
   2,275.76x = 3,274,525.03
5. Step 5: Solve for x
   x = 3,274,525.03/2,275.76
6. Step 6: Final answer
   x = 1,438.87