Finding the Fourth Proportional to 3,429.98, 5,143.34 and 1,455.36

Step by Step Solution

1. Step 1: Write the proportion equation
   3,429.98 : 5,143.34 = 1,455.36 : x
2. Step 2: Convert to fraction form
   3,429.98/5,143.34 = 1,455.36/x
3. Step 3: Cross multiply
   3,429.98x = 5,143.34 × 1,455.36
4. Step 4: Simplify right side
   3,429.98x = 7,485,411.30
5. Step 5: Solve for x
   x = 7,485,411.30/3,429.98
6. Step 6: Final answer
   x = 2,182.35