Finding the Fourth Proportional to 3,531.20, 5,297.49 and 1,066.23

Step by Step Solution

1. Step 1: Write the proportion equation
   3,531.20 : 5,297.49 = 1,066.23 : x
2. Step 2: Convert to fraction form
   3,531.20/5,297.49 = 1,066.23/x
3. Step 3: Cross multiply
   3,531.20x = 5,297.49 × 1,066.23
4. Step 4: Simplify right side
   3,531.20x = 5,648,342.76
5. Step 5: Solve for x
   x = 5,648,342.76/3,531.20
6. Step 6: Final answer
   x = 1,599.56