Finding the Fourth Proportional to 2,080.51, 3,121.38 and 1,105.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.51 : 3,121.38 = 1,105.88 : x
2. Step 2: Convert to fraction form
   2,080.51/3,121.38 = 1,105.88/x
3. Step 3: Cross multiply
   2,080.51x = 3,121.38 × 1,105.88
4. Step 4: Simplify right side
   2,080.51x = 3,451,856.11
5. Step 5: Solve for x
   x = 3,451,856.11/2,080.51
6. Step 6: Final answer
   x = 1,659.14