Finding the Fourth Proportional to 2,339.10, 3,503.78 and 1,107.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,339.10 : 3,503.78 = 1,107.50 : x
2. Step 2: Convert to fraction form
   2,339.10/3,503.78 = 1,107.50/x
3. Step 3: Cross multiply
   2,339.10x = 3,503.78 × 1,107.50
4. Step 4: Simplify right side
   2,339.10x = 3,880,413.29
5. Step 5: Solve for x
   x = 3,880,413.29/2,339.10
6. Step 6: Final answer
   x = 1,658.93