Finding the Fourth Proportional to 1,067.48, 1,598.90 and 579.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,067.48 : 1,598.90 = 579.50 : x
2. Step 2: Convert to fraction form
   1,067.48/1,598.90 = 579.50/x
3. Step 3: Cross multiply
   1,067.48x = 1,598.90 × 579.50
4. Step 4: Simplify right side
   1,067.48x = 926,562.55
5. Step 5: Solve for x
   x = 926,562.55/1,067.48
6. Step 6: Final answer
   x = 867.99