Finding the Fourth Proportional to 1,609.25, 2,219.55 and 1,112.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,609.25 : 2,219.55 = 1,112.72 : x
2. Step 2: Convert to fraction form
   1,609.25/2,219.55 = 1,112.72/x
3. Step 3: Cross multiply
   1,609.25x = 2,219.55 × 1,112.72
4. Step 4: Simplify right side
   1,609.25x = 2,469,737.68
5. Step 5: Solve for x
   x = 2,469,737.68/1,609.25
6. Step 6: Final answer
   x = 1,534.71