Finding the Fourth Proportional to 1,403.42, 1,935.20 and 960.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,403.42 : 1,935.20 = 960.62 : x
2. Step 2: Convert to fraction form
   1,403.42/1,935.20 = 960.62/x
3. Step 3: Cross multiply
   1,403.42x = 1,935.20 × 960.62
4. Step 4: Simplify right side
   1,403.42x = 1,858,991.82
5. Step 5: Solve for x
   x = 1,858,991.82/1,403.42
6. Step 6: Final answer
   x = 1,324.62