Finding the Fourth Proportional to 2,291.39, 3,162.14 and 1,243.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,291.39 : 3,162.14 = 1,243.46 : x
2. Step 2: Convert to fraction form
   2,291.39/3,162.14 = 1,243.46/x
3. Step 3: Cross multiply
   2,291.39x = 3,162.14 × 1,243.46
4. Step 4: Simplify right side
   2,291.39x = 3,931,994.60
5. Step 5: Solve for x
   x = 3,931,994.60/2,291.39
6. Step 6: Final answer
   x = 1,715.99