Finding the Fourth Proportional to 2,143.16, 3,214.78 and 756.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143.16 : 3,214.78 = 756.52 : x
2. Step 2: Convert to fraction form
   2,143.16/3,214.78 = 756.52/x
3. Step 3: Cross multiply
   2,143.16x = 3,214.78 × 756.52
4. Step 4: Simplify right side
   2,143.16x = 2,432,045.37
5. Step 5: Solve for x
   x = 2,432,045.37/2,143.16
6. Step 6: Final answer
   x = 1,134.79