Finding the Fourth Proportional to 1,109.02, 1,661.43 and 622.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.02 : 1,661.43 = 622.42 : x
2. Step 2: Convert to fraction form
   1,109.02/1,661.43 = 622.42/x
3. Step 3: Cross multiply
   1,109.02x = 1,661.43 × 622.42
4. Step 4: Simplify right side
   1,109.02x = 1,034,107.26
5. Step 5: Solve for x
   x = 1,034,107.26/1,109.02
6. Step 6: Final answer
   x = 932.45