Finding the Fourth Proportional to 2,003.23, 3,003.43 and 769.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.23 : 3,003.43 = 769.60 : x
2. Step 2: Convert to fraction form
   2,003.23/3,003.43 = 769.60/x
3. Step 3: Cross multiply
   2,003.23x = 3,003.43 × 769.60
4. Step 4: Simplify right side
   2,003.23x = 2,311,439.73
5. Step 5: Solve for x
   x = 2,311,439.73/2,003.23
6. Step 6: Final answer
   x = 1,153.86