Finding the Fourth Proportional to 2,399.57, 3,599.78 and 1,101.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,399.57 : 3,599.78 = 1,101.17 : x
2. Step 2: Convert to fraction form
   2,399.57/3,599.78 = 1,101.17/x
3. Step 3: Cross multiply
   2,399.57x = 3,599.78 × 1,101.17
4. Step 4: Simplify right side
   2,399.57x = 3,963,964.24
5. Step 5: Solve for x
   x = 3,963,964.24/2,399.57
6. Step 6: Final answer
   x = 1,651.95