Finding the Fourth Proportional to 1,485.23, 2,049.72 and 822.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,485.23 : 2,049.72 = 822.11 : x
2. Step 2: Convert to fraction form
   1,485.23/2,049.72 = 822.11/x
3. Step 3: Cross multiply
   1,485.23x = 2,049.72 × 822.11
4. Step 4: Simplify right side
   1,485.23x = 1,685,095.31
5. Step 5: Solve for x
   x = 1,685,095.31/1,485.23
6. Step 6: Final answer
   x = 1,134.57