Finding the Fourth Proportional to 2,149.52, 3,224.82 and 688.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,149.52 : 3,224.82 = 688.82 : x
2. Step 2: Convert to fraction form
   2,149.52/3,224.82 = 688.82/x
3. Step 3: Cross multiply
   2,149.52x = 3,224.82 × 688.82
4. Step 4: Simplify right side
   2,149.52x = 2,221,320.51
5. Step 5: Solve for x
   x = 2,221,320.51/2,149.52
6. Step 6: Final answer
   x = 1,033.40