Finding the Fourth Proportional to 1,067.89, 1,473.17 and 831.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,067.89 : 1,473.17 = 831.42 : x
2. Step 2: Convert to fraction form
   1,067.89/1,473.17 = 831.42/x
3. Step 3: Cross multiply
   1,067.89x = 1,473.17 × 831.42
4. Step 4: Simplify right side
   1,067.89x = 1,224,818.84
5. Step 5: Solve for x
   x = 1,224,818.84/1,067.89
6. Step 6: Final answer
   x = 1,146.95