Finding the Fourth Proportional to 2,155.24, 2,974.20 and 1,271.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.24 : 2,974.20 = 1,271.33 : x
2. Step 2: Convert to fraction form
   2,155.24/2,974.20 = 1,271.33/x
3. Step 3: Cross multiply
   2,155.24x = 2,974.20 × 1,271.33
4. Step 4: Simplify right side
   2,155.24x = 3,781,174.82
5. Step 5: Solve for x
   x = 3,781,174.82/2,155.24
6. Step 6: Final answer
   x = 1,754.41