Finding the Fourth Proportional to 3,555.10, 5,333.24 and 1,089.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,555.10 : 5,333.24 = 1,089.42 : x
2. Step 2: Convert to fraction form
   3,555.10/5,333.24 = 1,089.42/x
3. Step 3: Cross multiply
   3,555.10x = 5,333.24 × 1,089.42
4. Step 4: Simplify right side
   3,555.10x = 5,810,138.32
5. Step 5: Solve for x
   x = 5,810,138.32/3,555.10
6. Step 6: Final answer
   x = 1,634.31