Finding the Fourth Proportional to 2,339.63, 3,227.89 and 1,394.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,339.63 : 3,227.89 = 1,394.78 : x
2. Step 2: Convert to fraction form
   2,339.63/3,227.89 = 1,394.78/x
3. Step 3: Cross multiply
   2,339.63x = 3,227.89 × 1,394.78
4. Step 4: Simplify right side
   2,339.63x = 4,502,196.41
5. Step 5: Solve for x
   x = 4,502,196.41/2,339.63
6. Step 6: Final answer
   x = 1,924.32