Finding the Fourth Proportional to 2,148.49, 3,225.72 and 1,109.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,148.49 : 3,225.72 = 1,109.24 : x
2. Step 2: Convert to fraction form
   2,148.49/3,225.72 = 1,109.24/x
3. Step 3: Cross multiply
   2,148.49x = 3,225.72 × 1,109.24
4. Step 4: Simplify right side
   2,148.49x = 3,578,092.36
5. Step 5: Solve for x
   x = 3,578,092.36/2,148.49
6. Step 6: Final answer
   x = 1,665.40