Finding the Fourth Proportional to 2,391.30, 3,294.77 and 1,603.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,391.30 : 3,294.77 = 1,603.98 : x
2. Step 2: Convert to fraction form
   2,391.30/3,294.77 = 1,603.98/x
3. Step 3: Cross multiply
   2,391.30x = 3,294.77 × 1,603.98
4. Step 4: Simplify right side
   2,391.30x = 5,284,737.16
5. Step 5: Solve for x
   x = 5,284,737.16/2,391.30
6. Step 6: Final answer
   x = 2,209.99