Finding the Fourth Proportional to 1,036.50, 1,552.72 and 688.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036.50 : 1,552.72 = 688.82 : x
2. Step 2: Convert to fraction form
   1,036.50/1,552.72 = 688.82/x
3. Step 3: Cross multiply
   1,036.50x = 1,552.72 × 688.82
4. Step 4: Simplify right side
   1,036.50x = 1,069,544.59
5. Step 5: Solve for x
   x = 1,069,544.59/1,036.50
6. Step 6: Final answer
   x = 1,031.88