Finding the Fourth Proportional to 3,429.36, 5,144.46 and 1,089.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,429.36 : 5,144.46 = 1,089.50 : x
2. Step 2: Convert to fraction form
   3,429.36/5,144.46 = 1,089.50/x
3. Step 3: Cross multiply
   3,429.36x = 5,144.46 × 1,089.50
4. Step 4: Simplify right side
   3,429.36x = 5,604,894.43
5. Step 5: Solve for x
   x = 5,604,894.43/3,429.36
6. Step 6: Final answer
   x = 1,634.38