Finding the Fourth Proportional to 1,456.38, 2,007.54 and 1,161.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456.38 : 2,007.54 = 1,161.72 : x
2. Step 2: Convert to fraction form
   1,456.38/2,007.54 = 1,161.72/x
3. Step 3: Cross multiply
   1,456.38x = 2,007.54 × 1,161.72
4. Step 4: Simplify right side
   1,456.38x = 2,332,199.37
5. Step 5: Solve for x
   x = 2,332,199.37/1,456.38
6. Step 6: Final answer
   x = 1,601.37