Finding the Fourth Proportional to 2,380.62, 3,285.33 and 1,386.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,380.62 : 3,285.33 = 1,386.24 : x
2. Step 2: Convert to fraction form
   2,380.62/3,285.33 = 1,386.24/x
3. Step 3: Cross multiply
   2,380.62x = 3,285.33 × 1,386.24
4. Step 4: Simplify right side
   2,380.62x = 4,554,255.86
5. Step 5: Solve for x
   x = 4,554,255.86/2,380.62
6. Step 6: Final answer
   x = 1,913.05