Finding the Fourth Proportional to 2,152.68, 3,229.38 and 1,112.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,152.68 : 3,229.38 = 1,112.28 : x
2. Step 2: Convert to fraction form
   2,152.68/3,229.38 = 1,112.28/x
3. Step 3: Cross multiply
   2,152.68x = 3,229.38 × 1,112.28
4. Step 4: Simplify right side
   2,152.68x = 3,591,974.79
5. Step 5: Solve for x
   x = 3,591,974.79/2,152.68
6. Step 6: Final answer
   x = 1,668.61