Finding the Fourth Proportional to 3,607.48, 4,978.95 and 2,116.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,607.48 : 4,978.95 = 2,116.27 : x
2. Step 2: Convert to fraction form
   3,607.48/4,978.95 = 2,116.27/x
3. Step 3: Cross multiply
   3,607.48x = 4,978.95 × 2,116.27
4. Step 4: Simplify right side
   3,607.48x = 10,536,802.52
5. Step 5: Solve for x
   x = 10,536,802.52/3,607.48
6. Step 6: Final answer
   x = 2,920.82