Finding the Fourth Proportional to 1,731.38, 2,389.31 and 945.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,731.38 : 2,389.31 = 945.42 : x
2. Step 2: Convert to fraction form
   1,731.38/2,389.31 = 945.42/x
3. Step 3: Cross multiply
   1,731.38x = 2,389.31 × 945.42
4. Step 4: Simplify right side
   1,731.38x = 2,258,910.08
5. Step 5: Solve for x
   x = 2,258,910.08/1,731.38
6. Step 6: Final answer
   x = 1,304.69