Finding the Fourth Proportional to 2,227.59, 3,340.15 and 912.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,227.59 : 3,340.15 = 912.27 : x
2. Step 2: Convert to fraction form
   2,227.59/3,340.15 = 912.27/x
3. Step 3: Cross multiply
   2,227.59x = 3,340.15 × 912.27
4. Step 4: Simplify right side
   2,227.59x = 3,047,101.94
5. Step 5: Solve for x
   x = 3,047,101.94/2,227.59
6. Step 6: Final answer
   x = 1,367.89