Finding the Fourth Proportional to 1,019.18, 1,526.34 and 693.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.18 : 1,526.34 = 693.56 : x
2. Step 2: Convert to fraction form
   1,019.18/1,526.34 = 693.56/x
3. Step 3: Cross multiply
   1,019.18x = 1,526.34 × 693.56
4. Step 4: Simplify right side
   1,019.18x = 1,058,608.37
5. Step 5: Solve for x
   x = 1,058,608.37/1,019.18
6. Step 6: Final answer
   x = 1,038.69