Finding the Fourth Proportional to 1,018.72, 1,405.85 and 599.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.72 : 1,405.85 = 599.08 : x
2. Step 2: Convert to fraction form
   1,018.72/1,405.85 = 599.08/x
3. Step 3: Cross multiply
   1,018.72x = 1,405.85 × 599.08
4. Step 4: Simplify right side
   1,018.72x = 842,216.62
5. Step 5: Solve for x
   x = 842,216.62/1,018.72
6. Step 6: Final answer
   x = 826.74