Finding the Fourth Proportional to 3,608.03, 4,978.23 and 2,116.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,608.03 : 4,978.23 = 2,116.10 : x
2. Step 2: Convert to fraction form
   3,608.03/4,978.23 = 2,116.10/x
3. Step 3: Cross multiply
   3,608.03x = 4,978.23 × 2,116.10
4. Step 4: Simplify right side
   3,608.03x = 10,534,432.50
5. Step 5: Solve for x
   x = 10,534,432.50/3,608.03
6. Step 6: Final answer
   x = 2,919.72