Finding the Fourth Proportional to 2,082.20, 2,873.43 and 1,185.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,082.20 : 2,873.43 = 1,185.89 : x
2. Step 2: Convert to fraction form
   2,082.20/2,873.43 = 1,185.89/x
3. Step 3: Cross multiply
   2,082.20x = 2,873.43 × 1,185.89
4. Step 4: Simplify right side
   2,082.20x = 3,407,557.54
5. Step 5: Solve for x
   x = 3,407,557.54/2,082.20
6. Step 6: Final answer
   x = 1,636.52