Finding the Fourth Proportional to 2,130.72, 3,196.14 and 960.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,130.72 : 3,196.14 = 960.54 : x
2. Step 2: Convert to fraction form
   2,130.72/3,196.14 = 960.54/x
3. Step 3: Cross multiply
   2,130.72x = 3,196.14 × 960.54
4. Step 4: Simplify right side
   2,130.72x = 3,070,020.32
5. Step 5: Solve for x
   x = 3,070,020.32/2,130.72
6. Step 6: Final answer
   x = 1,440.84