Finding the Fourth Proportional to 1,491.31, 2,057.31 and 960.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,491.31 : 2,057.31 = 960.06 : x
2. Step 2: Convert to fraction form
   1,491.31/2,057.31 = 960.06/x
3. Step 3: Cross multiply
   1,491.31x = 2,057.31 × 960.06
4. Step 4: Simplify right side
   1,491.31x = 1,975,141.04
5. Step 5: Solve for x
   x = 1,975,141.04/1,491.31
6. Step 6: Final answer
   x = 1,324.43