Finding the Fourth Proportional to 1,665.33, 2,297.20 and 1,043.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.33 : 2,297.20 = 1,043.25 : x
2. Step 2: Convert to fraction form
   1,665.33/2,297.20 = 1,043.25/x
3. Step 3: Cross multiply
   1,665.33x = 2,297.20 × 1,043.25
4. Step 4: Simplify right side
   1,665.33x = 2,396,553.90
5. Step 5: Solve for x
   x = 2,396,553.90/1,665.33
6. Step 6: Final answer
   x = 1,439.09