Finding the Fourth Proportional to 3,588.59, 5,380.96 and 1,089.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,588.59 : 5,380.96 = 1,089.43 : x
2. Step 2: Convert to fraction form
   3,588.59/5,380.96 = 1,089.43/x
3. Step 3: Cross multiply
   3,588.59x = 5,380.96 × 1,089.43
4. Step 4: Simplify right side
   3,588.59x = 5,862,179.25
5. Step 5: Solve for x
   x = 5,862,179.25/3,588.59
6. Step 6: Final answer
   x = 1,633.56