Finding the Fourth Proportional to 1,424.25, 2,134.17 and 960.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,424.25 : 2,134.17 = 960.30 : x
2. Step 2: Convert to fraction form
   1,424.25/2,134.17 = 960.30/x
3. Step 3: Cross multiply
   1,424.25x = 2,134.17 × 960.30
4. Step 4: Simplify right side
   1,424.25x = 2,049,443.45
5. Step 5: Solve for x
   x = 2,049,443.45/1,424.25
6. Step 6: Final answer
   x = 1,438.96