Finding the Fourth Proportional to 1,485.34, 2,049.78 and 822.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,485.34 : 2,049.78 = 822.18 : x
2. Step 2: Convert to fraction form
   1,485.34/2,049.78 = 822.18/x
3. Step 3: Cross multiply
   1,485.34x = 2,049.78 × 822.18
4. Step 4: Simplify right side
   1,485.34x = 1,685,279.28
5. Step 5: Solve for x
   x = 1,685,279.28/1,485.34
6. Step 6: Final answer
   x = 1,134.61