Finding the Fourth Proportional to 1,024.60, 1,538.59 and 693.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,024.60 : 1,538.59 = 693.18 : x
2. Step 2: Convert to fraction form
   1,024.60/1,538.59 = 693.18/x
3. Step 3: Cross multiply
   1,024.60x = 1,538.59 × 693.18
4. Step 4: Simplify right side
   1,024.60x = 1,066,519.82
5. Step 5: Solve for x
   x = 1,066,519.82/1,024.60
6. Step 6: Final answer
   x = 1,040.91