Finding the Fourth Proportional to 2,152.84, 3,229.52 and 691.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,152.84 : 3,229.52 = 691.48 : x
2. Step 2: Convert to fraction form
   2,152.84/3,229.52 = 691.48/x
3. Step 3: Cross multiply
   2,152.84x = 3,229.52 × 691.48
4. Step 4: Simplify right side
   2,152.84x = 2,233,148.49
5. Step 5: Solve for x
   x = 2,233,148.49/2,152.84
6. Step 6: Final answer
   x = 1,037.30