Finding the Fourth Proportional to 2,291.47, 3,162.26 and 1,243.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,291.47 : 3,162.26 = 1,243.53 : x
2. Step 2: Convert to fraction form
   2,291.47/3,162.26 = 1,243.53/x
3. Step 3: Cross multiply
   2,291.47x = 3,162.26 × 1,243.53
4. Step 4: Simplify right side
   2,291.47x = 3,932,343.15
5. Step 5: Solve for x
   x = 3,932,343.15/2,291.47
6. Step 6: Final answer
   x = 1,716.08