Finding the Fourth Proportional to 2,603.18, 3,591.12 and 1,608.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,603.18 : 3,591.12 = 1,608.09 : x
2. Step 2: Convert to fraction form
   2,603.18/3,591.12 = 1,608.09/x
3. Step 3: Cross multiply
   2,603.18x = 3,591.12 × 1,608.09
4. Step 4: Simplify right side
   2,603.18x = 5,774,844.16
5. Step 5: Solve for x
   x = 5,774,844.16/2,603.18
6. Step 6: Final answer
   x = 2,218.38