Finding the Fourth Proportional to 2,148.82, 3,227.33 and 1,328.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,148.82 : 3,227.33 = 1,328.69 : x
2. Step 2: Convert to fraction form
   2,148.82/3,227.33 = 1,328.69/x
3. Step 3: Cross multiply
   2,148.82x = 3,227.33 × 1,328.69
4. Step 4: Simplify right side
   2,148.82x = 4,288,121.10
5. Step 5: Solve for x
   x = 4,288,121.10/2,148.82
6. Step 6: Final answer
   x = 1,995.57