Finding the Fourth Proportional to 2,628.27, 3,944.16 and 1,089.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,628.27 : 3,944.16 = 1,089.27 : x
2. Step 2: Convert to fraction form
   2,628.27/3,944.16 = 1,089.27/x
3. Step 3: Cross multiply
   2,628.27x = 3,944.16 × 1,089.27
4. Step 4: Simplify right side
   2,628.27x = 4,296,255.16
5. Step 5: Solve for x
   x = 4,296,255.16/2,628.27
6. Step 6: Final answer
   x = 1,634.63