Finding the Fourth Proportional to 2,226.56, 3,072.42 and 1,231.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,226.56 : 3,072.42 = 1,231.82 : x
2. Step 2: Convert to fraction form
   2,226.56/3,072.42 = 1,231.82/x
3. Step 3: Cross multiply
   2,226.56x = 3,072.42 × 1,231.82
4. Step 4: Simplify right side
   2,226.56x = 3,784,653.04
5. Step 5: Solve for x
   x = 3,784,653.04/2,226.56
6. Step 6: Final answer
   x = 1,699.77