Finding the Fourth Proportional to 2,380.62, 3,285.25 and 1,318.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,380.62 : 3,285.25 = 1,318.47 : x
2. Step 2: Convert to fraction form
   2,380.62/3,285.25 = 1,318.47/x
3. Step 3: Cross multiply
   2,380.62x = 3,285.25 × 1,318.47
4. Step 4: Simplify right side
   2,380.62x = 4,331,503.57
5. Step 5: Solve for x
   x = 4,331,503.57/2,380.62
6. Step 6: Final answer
   x = 1,819.49