Finding the Fourth Proportional to 1,018.74, 1,405.87 and 599.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.74 : 1,405.87 = 599.06 : x
2. Step 2: Convert to fraction form
   1,018.74/1,405.87 = 599.06/x
3. Step 3: Cross multiply
   1,018.74x = 1,405.87 × 599.06
4. Step 4: Simplify right side
   1,018.74x = 842,200.48
5. Step 5: Solve for x
   x = 842,200.48/1,018.74
6. Step 6: Final answer
   x = 826.71