Finding the Fourth Proportional to 3,429.26, 5,142.86 and 1,089.17

Step by Step Solution

1. Step 1: Write the proportion equation
   3,429.26 : 5,142.86 = 1,089.17 : x
2. Step 2: Convert to fraction form
   3,429.26/5,142.86 = 1,089.17/x
3. Step 3: Cross multiply
   3,429.26x = 5,142.86 × 1,089.17
4. Step 4: Simplify right side
   3,429.26x = 5,601,448.83
5. Step 5: Solve for x
   x = 5,601,448.83/3,429.26
6. Step 6: Final answer
   x = 1,633.43