Finding the Fourth Proportional to 2,066.28, 2,851.12 and 1,181.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.28 : 2,851.12 = 1,181.90 : x
2. Step 2: Convert to fraction form
   2,066.28/2,851.12 = 1,181.90/x
3. Step 3: Cross multiply
   2,066.28x = 2,851.12 × 1,181.90
4. Step 4: Simplify right side
   2,066.28x = 3,369,738.73
5. Step 5: Solve for x
   x = 3,369,738.73/2,066.28
6. Step 6: Final answer
   x = 1,630.82