Finding the Fourth Proportional to 2,082.81, 3,119.82 and 1,690.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,082.81 : 3,119.82 = 1,690.98 : x
2. Step 2: Convert to fraction form
   2,082.81/3,119.82 = 1,690.98/x
3. Step 3: Cross multiply
   2,082.81x = 3,119.82 × 1,690.98
4. Step 4: Simplify right side
   2,082.81x = 5,275,535.18
5. Step 5: Solve for x
   x = 5,275,535.18/2,082.81
6. Step 6: Final answer
   x = 2,532.89