Finding the Fourth Proportional to 1,109.30, 1,662.33 and 622.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.30 : 1,662.33 = 622.49 : x
2. Step 2: Convert to fraction form
   1,109.30/1,662.33 = 622.49/x
3. Step 3: Cross multiply
   1,109.30x = 1,662.33 × 622.49
4. Step 4: Simplify right side
   1,109.30x = 1,034,783.80
5. Step 5: Solve for x
   x = 1,034,783.80/1,109.30
6. Step 6: Final answer
   x = 932.83