Finding the Fourth Proportional to 1,067.31, 1,471.28 and 834.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,067.31 : 1,471.28 = 834.03 : x
2. Step 2: Convert to fraction form
   1,067.31/1,471.28 = 834.03/x
3. Step 3: Cross multiply
   1,067.31x = 1,471.28 × 834.03
4. Step 4: Simplify right side
   1,067.31x = 1,227,087.49
5. Step 5: Solve for x
   x = 1,227,087.49/1,067.31
6. Step 6: Final answer
   x = 1,149.70