Finding the Fourth Proportional to 2,109.72, 3,163.04 and 1,069.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.72 : 3,163.04 = 1,069.24 : x
2. Step 2: Convert to fraction form
   2,109.72/3,163.04 = 1,069.24/x
3. Step 3: Cross multiply
   2,109.72x = 3,163.04 × 1,069.24
4. Step 4: Simplify right side
   2,109.72x = 3,382,048.89
5. Step 5: Solve for x
   x = 3,382,048.89/2,109.72
6. Step 6: Final answer
   x = 1,603.08