Finding the Fourth Proportional to 2,399.73, 3,597.12 and 918.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,399.73 : 3,597.12 = 918.60 : x
2. Step 2: Convert to fraction form
   2,399.73/3,597.12 = 918.60/x
3. Step 3: Cross multiply
   2,399.73x = 3,597.12 × 918.60
4. Step 4: Simplify right side
   2,399.73x = 3,304,321.88
5. Step 5: Solve for x
   x = 3,304,321.88/2,399.73
6. Step 6: Final answer
   x = 1,376.96