Finding the Fourth Proportional to 1,485.50, 2,049.89 and 822.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,485.50 : 2,049.89 = 822.30 : x
2. Step 2: Convert to fraction form
   1,485.50/2,049.89 = 822.30/x
3. Step 3: Cross multiply
   1,485.50x = 2,049.89 × 822.30
4. Step 4: Simplify right side
   1,485.50x = 1,685,620.44
5. Step 5: Solve for x
   x = 1,685,620.44/1,485.50
6. Step 6: Final answer
   x = 1,134.72