Finding the Fourth Proportional to 2,155.33, 3,228.13 and 1,766.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.33 : 3,228.13 = 1,766.53 : x
2. Step 2: Convert to fraction form
   2,155.33/3,228.13 = 1,766.53/x
3. Step 3: Cross multiply
   2,155.33x = 3,228.13 × 1,766.53
4. Step 4: Simplify right side
   2,155.33x = 5,702,588.49
5. Step 5: Solve for x
   x = 5,702,588.49/2,155.33
6. Step 6: Final answer
   x = 2,645.81