Finding the Fourth Proportional to 1,109.04, 1,662.24 and 697.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.04 : 1,662.24 = 697.20 : x
2. Step 2: Convert to fraction form
   1,109.04/1,662.24 = 697.20/x
3. Step 3: Cross multiply
   1,109.04x = 1,662.24 × 697.20
4. Step 4: Simplify right side
   1,109.04x = 1,158,913.73
5. Step 5: Solve for x
   x = 1,158,913.73/1,109.04
6. Step 6: Final answer
   x = 1,044.97