Finding the Fourth Proportional to 2,080.51, 3,118.16 and 1,040.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.51 : 3,118.16 = 1,040.81 : x
2. Step 2: Convert to fraction form
   2,080.51/3,118.16 = 1,040.81/x
3. Step 3: Cross multiply
   2,080.51x = 3,118.16 × 1,040.81
4. Step 4: Simplify right side
   2,080.51x = 3,245,391.31
5. Step 5: Solve for x
   x = 3,245,391.31/2,080.51
6. Step 6: Final answer
   x = 1,559.90