Finding the Fourth Proportional to 2,654.67, 3,980.37 and 2,311.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,654.67 : 3,980.37 = 2,311.23 : x
2. Step 2: Convert to fraction form
   2,654.67/3,980.37 = 2,311.23/x
3. Step 3: Cross multiply
   2,654.67x = 3,980.37 × 2,311.23
4. Step 4: Simplify right side
   2,654.67x = 9,199,550.56
5. Step 5: Solve for x
   x = 9,199,550.56/2,654.67
6. Step 6: Final answer
   x = 3,465.42