Finding the Fourth Proportional to 1,109.15, 1,665.24 and 697.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.15 : 1,665.24 = 697.06 : x
2. Step 2: Convert to fraction form
   1,109.15/1,665.24 = 697.06/x
3. Step 3: Cross multiply
   1,109.15x = 1,665.24 × 697.06
4. Step 4: Simplify right side
   1,109.15x = 1,160,760.38
5. Step 5: Solve for x
   x = 1,160,760.38/1,109.15
6. Step 6: Final answer
   x = 1,046.54