Finding the Fourth Proportional to 2,081.70, 3,120.51 and 1,040.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.70 : 3,120.51 = 1,040.14 : x
2. Step 2: Convert to fraction form
   2,081.70/3,120.51 = 1,040.14/x
3. Step 3: Cross multiply
   2,081.70x = 3,120.51 × 1,040.14
4. Step 4: Simplify right side
   2,081.70x = 3,245,769.22
5. Step 5: Solve for x
   x = 3,245,769.22/2,081.70
6. Step 6: Final answer
   x = 1,559.19