Finding the Fourth Proportional to 2,155.50, 2,974.95 and 1,271.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.50 : 2,974.95 = 1,271.52 : x
2. Step 2: Convert to fraction form
   2,155.50/2,974.95 = 1,271.52/x
3. Step 3: Cross multiply
   2,155.50x = 2,974.95 × 1,271.52
4. Step 4: Simplify right side
   2,155.50x = 3,782,708.42
5. Step 5: Solve for x
   x = 3,782,708.42/2,155.50
6. Step 6: Final answer
   x = 1,754.91