Finding the Fourth Proportional to 3,456.16, 5,185.25 and 1,116.11

Step by Step Solution

1. Step 1: Write the proportion equation
   3,456.16 : 5,185.25 = 1,116.11 : x
2. Step 2: Convert to fraction form
   3,456.16/5,185.25 = 1,116.11/x
3. Step 3: Cross multiply
   3,456.16x = 5,185.25 × 1,116.11
4. Step 4: Simplify right side
   3,456.16x = 5,787,309.38
5. Step 5: Solve for x
   x = 5,787,309.38/3,456.16
6. Step 6: Final answer
   x = 1,674.49