Finding the Fourth Proportional to 2,380.93, 3,285.61 and 1,318.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,380.93 : 3,285.61 = 1,318.65 : x
2. Step 2: Convert to fraction form
   2,380.93/3,285.61 = 1,318.65/x
3. Step 3: Cross multiply
   2,380.93x = 3,285.61 × 1,318.65
4. Step 4: Simplify right side
   2,380.93x = 4,332,589.15
5. Step 5: Solve for x
   x = 4,332,589.15/2,380.93
6. Step 6: Final answer
   x = 1,819.70