Finding the Fourth Proportional to 1,601.15, 2,209.83 and 1,158.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,601.15 : 2,209.83 = 1,158.89 : x
2. Step 2: Convert to fraction form
   1,601.15/2,209.83 = 1,158.89/x
3. Step 3: Cross multiply
   1,601.15x = 2,209.83 × 1,158.89
4. Step 4: Simplify right side
   1,601.15x = 2,560,949.89
5. Step 5: Solve for x
   x = 2,560,949.89/1,601.15
6. Step 6: Final answer
   x = 1,599.44