Finding the Fourth Proportional to 2,608.49, 3,931.07 and 2,348.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,608.49 : 3,931.07 = 2,348.78 : x
2. Step 2: Convert to fraction form
   2,608.49/3,931.07 = 2,348.78/x
3. Step 3: Cross multiply
   2,608.49x = 3,931.07 × 2,348.78
4. Step 4: Simplify right side
   2,608.49x = 9,233,209.31
5. Step 5: Solve for x
   x = 9,233,209.31/2,608.49
6. Step 6: Final answer
   x = 3,539.68