Finding the Fourth Proportional to 2,155.48, 2,974.05 and 1,271.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.48 : 2,974.05 = 1,271.33 : x
2. Step 2: Convert to fraction form
   2,155.48/2,974.05 = 1,271.33/x
3. Step 3: Cross multiply
   2,155.48x = 2,974.05 × 1,271.33
4. Step 4: Simplify right side
   2,155.48x = 3,780,995.27
5. Step 5: Solve for x
   x = 3,780,995.27/2,155.48
6. Step 6: Final answer
   x = 1,754.13