Finding the Fourth Proportional to 2,216.72, 3,322.19 and 1,120.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,216.72 : 3,322.19 = 1,120.49 : x
2. Step 2: Convert to fraction form
   2,216.72/3,322.19 = 1,120.49/x
3. Step 3: Cross multiply
   2,216.72x = 3,322.19 × 1,120.49
4. Step 4: Simplify right side
   2,216.72x = 3,722,458.46
5. Step 5: Solve for x
   x = 3,722,458.46/2,216.72
6. Step 6: Final answer
   x = 1,679.27