Finding the Fourth Proportional to 2,066.48, 2,850.33 and 1,320.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.48 : 2,850.33 = 1,320.11 : x
2. Step 2: Convert to fraction form
   2,066.48/2,850.33 = 1,320.11/x
3. Step 3: Cross multiply
   2,066.48x = 2,850.33 × 1,320.11
4. Step 4: Simplify right side
   2,066.48x = 3,762,743.10
5. Step 5: Solve for x
   x = 3,762,743.10/2,066.48
6. Step 6: Final answer
   x = 1,820.85