Finding the Fourth Proportional to 1,868.37, 2,579.59 and 1,161.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,868.37 : 2,579.59 = 1,161.27 : x
2. Step 2: Convert to fraction form
   1,868.37/2,579.59 = 1,161.27/x
3. Step 3: Cross multiply
   1,868.37x = 2,579.59 × 1,161.27
4. Step 4: Simplify right side
   1,868.37x = 2,995,594.03
5. Step 5: Solve for x
   x = 2,995,594.03/1,868.37
6. Step 6: Final answer
   x = 1,603.32