Finding the Fourth Proportional to 2,456.49, 3,390.31 and 1,394.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.49 : 3,390.31 = 1,394.53 : x
2. Step 2: Convert to fraction form
   2,456.49/3,390.31 = 1,394.53/x
3. Step 3: Cross multiply
   2,456.49x = 3,390.31 × 1,394.53
4. Step 4: Simplify right side
   2,456.49x = 4,727,882.27
5. Step 5: Solve for x
   x = 4,727,882.27/2,456.49
6. Step 6: Final answer
   x = 1,924.65