Finding the Fourth Proportional to 2,143.34, 3,214.77 and 756.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143.34 : 3,214.77 = 756.42 : x
2. Step 2: Convert to fraction form
   2,143.34/3,214.77 = 756.42/x
3. Step 3: Cross multiply
   2,143.34x = 3,214.77 × 756.42
4. Step 4: Simplify right side
   2,143.34x = 2,431,716.32
5. Step 5: Solve for x
   x = 2,431,716.32/2,143.34
6. Step 6: Final answer
   x = 1,134.55