Finding the Fourth Proportional to 1,066.30, 1,597.47 and 579.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.30 : 1,597.47 = 579.76 : x
2. Step 2: Convert to fraction form
   1,066.30/1,597.47 = 579.76/x
3. Step 3: Cross multiply
   1,066.30x = 1,597.47 × 579.76
4. Step 4: Simplify right side
   1,066.30x = 926,149.21
5. Step 5: Solve for x
   x = 926,149.21/1,066.30
6. Step 6: Final answer
   x = 868.56