Finding the Fourth Proportional to 1,434.05, 2,151.98 and 960.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.05 : 2,151.98 = 960.20 : x
2. Step 2: Convert to fraction form
   1,434.05/2,151.98 = 960.20/x
3. Step 3: Cross multiply
   1,434.05x = 2,151.98 × 960.20
4. Step 4: Simplify right side
   1,434.05x = 2,066,322.84
5. Step 5: Solve for x
   x = 2,066,322.84/1,434.05
6. Step 6: Final answer
   x = 1,440.91