Finding the Fourth Proportional to 3,608.49, 4,978.58 and 2,116.47

Step by Step Solution

1. Step 1: Write the proportion equation
   3,608.49 : 4,978.58 = 2,116.47 : x
2. Step 2: Convert to fraction form
   3,608.49/4,978.58 = 2,116.47/x
3. Step 3: Cross multiply
   3,608.49x = 4,978.58 × 2,116.47
4. Step 4: Simplify right side
   3,608.49x = 10,537,020.50
5. Step 5: Solve for x
   x = 10,537,020.50/3,608.49
6. Step 6: Final answer
   x = 2,920.06