Finding the Fourth Proportional to 3,608.32, 4,980.52 and 2,116.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,608.32 : 4,980.52 = 2,116.30 : x
2. Step 2: Convert to fraction form
   3,608.32/4,980.52 = 2,116.30/x
3. Step 3: Cross multiply
   3,608.32x = 4,980.52 × 2,116.30
4. Step 4: Simplify right side
   3,608.32x = 10,540,274.48
5. Step 5: Solve for x
   x = 10,540,274.48/3,608.32
6. Step 6: Final answer
   x = 2,921.10