Finding the Fourth Proportional to 1,328.45, 1,833.59 and 769.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,328.45 : 1,833.59 = 769.24 : x
2. Step 2: Convert to fraction form
   1,328.45/1,833.59 = 769.24/x
3. Step 3: Cross multiply
   1,328.45x = 1,833.59 × 769.24
4. Step 4: Simplify right side
   1,328.45x = 1,410,470.77
5. Step 5: Solve for x
   x = 1,410,470.77/1,328.45
6. Step 6: Final answer
   x = 1,061.74