Finding the Fourth Proportional to 2,387.32, 3,294.50 and 1,339.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,387.32 : 3,294.50 = 1,339.40 : x
2. Step 2: Convert to fraction form
   2,387.32/3,294.50 = 1,339.40/x
3. Step 3: Cross multiply
   2,387.32x = 3,294.50 × 1,339.40
4. Step 4: Simplify right side
   2,387.32x = 4,412,653.30
5. Step 5: Solve for x
   x = 4,412,653.30/2,387.32
6. Step 6: Final answer
   x = 1,848.37