Finding the Fourth Proportional to 2,142.93, 3,215.83 and 756.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.93 : 3,215.83 = 756.27 : x
2. Step 2: Convert to fraction form
   2,142.93/3,215.83 = 756.27/x
3. Step 3: Cross multiply
   2,142.93x = 3,215.83 × 756.27
4. Step 4: Simplify right side
   2,142.93x = 2,432,033.86
5. Step 5: Solve for x
   x = 2,432,033.86/2,142.93
6. Step 6: Final answer
   x = 1,134.91