Finding the Fourth Proportional to 2,228.56, 3,343.32 and 1,072.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,228.56 : 3,343.32 = 1,072.72 : x
2. Step 2: Convert to fraction form
   2,228.56/3,343.32 = 1,072.72/x
3. Step 3: Cross multiply
   2,228.56x = 3,343.32 × 1,072.72
4. Step 4: Simplify right side
   2,228.56x = 3,586,446.23
5. Step 5: Solve for x
   x = 3,586,446.23/2,228.56
6. Step 6: Final answer
   x = 1,609.31