Finding the Fourth Proportional to 2,382.27, 3,287.25 and 1,387.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,382.27 : 3,287.25 = 1,387.74 : x
2. Step 2: Convert to fraction form
   2,382.27/3,287.25 = 1,387.74/x
3. Step 3: Cross multiply
   2,382.27x = 3,287.25 × 1,387.74
4. Step 4: Simplify right side
   2,382.27x = 4,561,848.32
5. Step 5: Solve for x
   x = 4,561,848.32/2,382.27
6. Step 6: Final answer
   x = 1,914.92