Finding the Fourth Proportional to 2,990.12, 4,123.91 and 2,654.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,990.12 : 4,123.91 = 2,654.27 : x
2. Step 2: Convert to fraction form
   2,990.12/4,123.91 = 2,654.27/x
3. Step 3: Cross multiply
   2,990.12x = 4,123.91 × 2,654.27
4. Step 4: Simplify right side
   2,990.12x = 10,945,957.32
5. Step 5: Solve for x
   x = 10,945,957.32/2,990.12
6. Step 6: Final answer
   x = 3,660.71