Finding the Fourth Proportional to 3,628.82, 5,441.51 and 2,128.29

Step by Step Solution

1. Step 1: Write the proportion equation
   3,628.82 : 5,441.51 = 2,128.29 : x
2. Step 2: Convert to fraction form
   3,628.82/5,441.51 = 2,128.29/x
3. Step 3: Cross multiply
   3,628.82x = 5,441.51 × 2,128.29
4. Step 4: Simplify right side
   3,628.82x = 11,581,100.68
5. Step 5: Solve for x
   x = 11,581,100.68/3,628.82
6. Step 6: Final answer
   x = 3,191.43