Finding the Fourth Proportional to 2,389.18, 3,297.30 and 1,394.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,389.18 : 3,297.30 = 1,394.38 : x
2. Step 2: Convert to fraction form
   2,389.18/3,297.30 = 1,394.38/x
3. Step 3: Cross multiply
   2,389.18x = 3,297.30 × 1,394.38
4. Step 4: Simplify right side
   2,389.18x = 4,597,689.17
5. Step 5: Solve for x
   x = 4,597,689.17/2,389.18
6. Step 6: Final answer
   x = 1,924.38