Finding the Fourth Proportional to 2,291.67, 3,162.56 and 1,243.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,291.67 : 3,162.56 = 1,243.73 : x
2. Step 2: Convert to fraction form
   2,291.67/3,162.56 = 1,243.73/x
3. Step 3: Cross multiply
   2,291.67x = 3,162.56 × 1,243.73
4. Step 4: Simplify right side
   2,291.67x = 3,933,348.72
5. Step 5: Solve for x
   x = 3,933,348.72/2,291.67
6. Step 6: Final answer
   x = 1,716.37