Finding the Fourth Proportional to 2,155.33, 3,233.30 and 768.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.33 : 3,233.30 = 768.25 : x
2. Step 2: Convert to fraction form
   2,155.33/3,233.30 = 768.25/x
3. Step 3: Cross multiply
   2,155.33x = 3,233.30 × 768.25
4. Step 4: Simplify right side
   2,155.33x = 2,483,982.73
5. Step 5: Solve for x
   x = 2,483,982.73/2,155.33
6. Step 6: Final answer
   x = 1,152.48