Finding the Fourth Proportional to 1,022.88, 1,530 and 694.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,022.88 : 1,530 = 694.56 : x
2. Step 2: Convert to fraction form
   1,022.88/1,530 = 694.56/x
3. Step 3: Cross multiply
   1,022.88x = 1,530 × 694.56
4. Step 4: Simplify right side
   1,022.88x = 1,062,676.80
5. Step 5: Solve for x
   x = 1,062,676.80/1,022.88
6. Step 6: Final answer
   x = 1,038.91