Finding the Fourth Proportional to 1,122.02, 1,546.61 and 885.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,122.02 : 1,546.61 = 885.59 : x
2. Step 2: Convert to fraction form
   1,122.02/1,546.61 = 885.59/x
3. Step 3: Cross multiply
   1,122.02x = 1,546.61 × 885.59
4. Step 4: Simplify right side
   1,122.02x = 1,369,662.63
5. Step 5: Solve for x
   x = 1,369,662.63/1,122.02
6. Step 6: Final answer
   x = 1,220.71