Finding the Fourth Proportional to 1,120.05, 1,679.31 and 599.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,120.05 : 1,679.31 = 599.73 : x
2. Step 2: Convert to fraction form
   1,120.05/1,679.31 = 599.73/x
3. Step 3: Cross multiply
   1,120.05x = 1,679.31 × 599.73
4. Step 4: Simplify right side
   1,120.05x = 1,007,132.59
5. Step 5: Solve for x
   x = 1,007,132.59/1,120.05
6. Step 6: Final answer
   x = 899.19