Finding the Fourth Proportional to 1,066.54, 1,598.61 and 579.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.54 : 1,598.61 = 579.82 : x
2. Step 2: Convert to fraction form
   1,066.54/1,598.61 = 579.82/x
3. Step 3: Cross multiply
   1,066.54x = 1,598.61 × 579.82
4. Step 4: Simplify right side
   1,066.54x = 926,906.05
5. Step 5: Solve for x
   x = 926,906.05/1,066.54
6. Step 6: Final answer
   x = 869.08