Finding the Fourth Proportional to 3,788.52, 5,228.52 and 2,216.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,788.52 : 5,228.52 = 2,216.28 : x
2. Step 2: Convert to fraction form
   3,788.52/5,228.52 = 2,216.28/x
3. Step 3: Cross multiply
   3,788.52x = 5,228.52 × 2,216.28
4. Step 4: Simplify right side
   3,788.52x = 11,587,864.31
5. Step 5: Solve for x
   x = 11,587,864.31/3,788.52
6. Step 6: Final answer
   x = 3,058.68