Finding the Fourth Proportional to 3,429.21, 5,143.83 and 832.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,429.21 : 5,143.83 = 832.15 : x
2. Step 2: Convert to fraction form
   3,429.21/5,143.83 = 832.15/x
3. Step 3: Cross multiply
   3,429.21x = 5,143.83 × 832.15
4. Step 4: Simplify right side
   3,429.21x = 4,280,429.32
5. Step 5: Solve for x
   x = 4,280,429.32/3,429.21
6. Step 6: Final answer
   x = 1,248.23