Finding the Fourth Proportional to 2,382.45, 3,287.70 and 1,320.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,382.45 : 3,287.70 = 1,320.27 : x
2. Step 2: Convert to fraction form
   2,382.45/3,287.70 = 1,320.27/x
3. Step 3: Cross multiply
   2,382.45x = 3,287.70 × 1,320.27
4. Step 4: Simplify right side
   2,382.45x = 4,340,641.21
5. Step 5: Solve for x
   x = 4,340,641.21/2,382.45
6. Step 6: Final answer
   x = 1,821.92