Finding the Fourth Proportional to 2,387.64, 3,294.72 and 1,339.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,387.64 : 3,294.72 = 1,339.68 : x
2. Step 2: Convert to fraction form
   2,387.64/3,294.72 = 1,339.68/x
3. Step 3: Cross multiply
   2,387.64x = 3,294.72 × 1,339.68
4. Step 4: Simplify right side
   2,387.64x = 4,413,870.49
5. Step 5: Solve for x
   x = 4,413,870.49/2,387.64
6. Step 6: Final answer
   x = 1,848.63