Finding the Fourth Proportional to 2,215.41, 3,057.48 and 1,271.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.41 : 3,057.48 = 1,271.51 : x
2. Step 2: Convert to fraction form
   2,215.41/3,057.48 = 1,271.51/x
3. Step 3: Cross multiply
   2,215.41x = 3,057.48 × 1,271.51
4. Step 4: Simplify right side
   2,215.41x = 3,887,601.11
5. Step 5: Solve for x
   x = 3,887,601.11/2,215.41
6. Step 6: Final answer
   x = 1,754.80