Finding the Fourth Proportional to 1,018.50, 1,525.53 and 694.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.50 : 1,525.53 = 694.02 : x
2. Step 2: Convert to fraction form
   1,018.50/1,525.53 = 694.02/x
3. Step 3: Cross multiply
   1,018.50x = 1,525.53 × 694.02
4. Step 4: Simplify right side
   1,018.50x = 1,058,748.33
5. Step 5: Solve for x
   x = 1,058,748.33/1,018.50
6. Step 6: Final answer
   x = 1,039.52