Finding the Fourth Proportional to 2,180.72, 3,271.17 and 948.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,180.72 : 3,271.17 = 948.20 : x
2. Step 2: Convert to fraction form
   2,180.72/3,271.17 = 948.20/x
3. Step 3: Cross multiply
   2,180.72x = 3,271.17 × 948.20
4. Step 4: Simplify right side
   2,180.72x = 3,101,707.04
5. Step 5: Solve for x
   x = 3,101,707.04/2,180.72
6. Step 6: Final answer
   x = 1,422.33