Finding the Fourth Proportional to 2,643.04, 3,955.71 and 2,608.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,643.04 : 3,955.71 = 2,608.08 : x
2. Step 2: Convert to fraction form
   2,643.04/3,955.71 = 2,608.08/x
3. Step 3: Cross multiply
   2,643.04x = 3,955.71 × 2,608.08
4. Step 4: Simplify right side
   2,643.04x = 10,316,808.14
5. Step 5: Solve for x
   x = 10,316,808.14/2,643.04
6. Step 6: Final answer
   x = 3,903.39