Finding the Fourth Proportional to 3,608.69, 4,979.27 and 2,117.07

Step by Step Solution

1. Step 1: Write the proportion equation
   3,608.69 : 4,979.27 = 2,117.07 : x
2. Step 2: Convert to fraction form
   3,608.69/4,979.27 = 2,117.07/x
3. Step 3: Cross multiply
   3,608.69x = 4,979.27 × 2,117.07
4. Step 4: Simplify right side
   3,608.69x = 10,541,468.43
5. Step 5: Solve for x
   x = 10,541,468.43/3,608.69
6. Step 6: Final answer
   x = 2,921.14