Finding the Fourth Proportional to 2,080.23, 3,121.25 and 1,105.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.23 : 3,121.25 = 1,105.19 : x
2. Step 2: Convert to fraction form
   2,080.23/3,121.25 = 1,105.19/x
3. Step 3: Cross multiply
   2,080.23x = 3,121.25 × 1,105.19
4. Step 4: Simplify right side
   2,080.23x = 3,449,553.16
5. Step 5: Solve for x
   x = 3,449,553.16/2,080.23
6. Step 6: Final answer
   x = 1,658.26