Finding the Fourth Proportional to 2,215.52, 3,057.49 and 1,271.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.52 : 3,057.49 = 1,271.48 : x
2. Step 2: Convert to fraction form
   2,215.52/3,057.49 = 1,271.48/x
3. Step 3: Cross multiply
   2,215.52x = 3,057.49 × 1,271.48
4. Step 4: Simplify right side
   2,215.52x = 3,887,538.39
5. Step 5: Solve for x
   x = 3,887,538.39/2,215.52
6. Step 6: Final answer
   x = 1,754.68