Finding the Fourth Proportional to 1,110.22, 1,665.17 and 698.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,110.22 : 1,665.17 = 698.09 : x
2. Step 2: Convert to fraction form
   1,110.22/1,665.17 = 698.09/x
3. Step 3: Cross multiply
   1,110.22x = 1,665.17 × 698.09
4. Step 4: Simplify right side
   1,110.22x = 1,162,435.03
5. Step 5: Solve for x
   x = 1,162,435.03/1,110.22
6. Step 6: Final answer
   x = 1,047.04