Finding the Fourth Proportional to 2,116.55, 2,921.18 and 2,023.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116.55 : 2,921.18 = 2,023.11 : x
2. Step 2: Convert to fraction form
   2,116.55/2,921.18 = 2,023.11/x
3. Step 3: Cross multiply
   2,116.55x = 2,921.18 × 2,023.11
4. Step 4: Simplify right side
   2,116.55x = 5,909,869.73
5. Step 5: Solve for x
   x = 5,909,869.73/2,116.55
6. Step 6: Final answer
   x = 2,792.22