Finding the Fourth Proportional to 1,485.42, 2,049.89 and 822.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,485.42 : 2,049.89 = 822.28 : x
2. Step 2: Convert to fraction form
   1,485.42/2,049.89 = 822.28/x
3. Step 3: Cross multiply
   1,485.42x = 2,049.89 × 822.28
4. Step 4: Simplify right side
   1,485.42x = 1,685,582.78
5. Step 5: Solve for x
   x = 1,685,582.78/1,485.42
6. Step 6: Final answer
   x = 1,134.75