Finding the Fourth Proportional to 3,548.15, 5,309.69 and 2,608.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,548.15 : 5,309.69 = 2,608.89 : x
2. Step 2: Convert to fraction form
   3,548.15/5,309.69 = 2,608.89/x
3. Step 3: Cross multiply
   3,548.15x = 5,309.69 × 2,608.89
4. Step 4: Simplify right side
   3,548.15x = 13,852,384.10
5. Step 5: Solve for x
   x = 13,852,384.10/3,548.15
6. Step 6: Final answer
   x = 3,904.12