Finding the Fourth Proportional to 2,212.72, 3,314.22 and 910.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,212.72 : 3,314.22 = 910.24 : x
2. Step 2: Convert to fraction form
   2,212.72/3,314.22 = 910.24/x
3. Step 3: Cross multiply
   2,212.72x = 3,314.22 × 910.24
4. Step 4: Simplify right side
   2,212.72x = 3,016,735.61
5. Step 5: Solve for x
   x = 3,016,735.61/2,212.72
6. Step 6: Final answer
   x = 1,363.36