Finding the Fourth Proportional to 1,644.71, 2,269.55 and 1,112.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,644.71 : 2,269.55 = 1,112.51 : x
2. Step 2: Convert to fraction form
   1,644.71/2,269.55 = 1,112.51/x
3. Step 3: Cross multiply
   1,644.71x = 2,269.55 × 1,112.51
4. Step 4: Simplify right side
   1,644.71x = 2,524,891.51
5. Step 5: Solve for x
   x = 2,524,891.51/1,644.71
6. Step 6: Final answer
   x = 1,535.16