Finding the Fourth Proportional to 2,387.07, 3,293.86 and 1,442.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,387.07 : 3,293.86 = 1,442.71 : x
2. Step 2: Convert to fraction form
   2,387.07/3,293.86 = 1,442.71/x
3. Step 3: Cross multiply
   2,387.07x = 3,293.86 × 1,442.71
4. Step 4: Simplify right side
   2,387.07x = 4,752,061.08
5. Step 5: Solve for x
   x = 4,752,061.08/2,387.07
6. Step 6: Final answer
   x = 1,990.75