Finding the Fourth Proportional to 2,329.89, 3,495.56 and 769.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,329.89 : 3,495.56 = 769.91 : x
2. Step 2: Convert to fraction form
   2,329.89/3,495.56 = 769.91/x
3. Step 3: Cross multiply
   2,329.89x = 3,495.56 × 769.91
4. Step 4: Simplify right side
   2,329.89x = 2,691,245.27
5. Step 5: Solve for x
   x = 2,691,245.27/2,329.89
6. Step 6: Final answer
   x = 1,155.10