Finding the Fourth Proportional to 2,399.23, 3,311.20 and 1,455.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,399.23 : 3,311.20 = 1,455.06 : x
2. Step 2: Convert to fraction form
   2,399.23/3,311.20 = 1,455.06/x
3. Step 3: Cross multiply
   2,399.23x = 3,311.20 × 1,455.06
4. Step 4: Simplify right side
   2,399.23x = 4,818,013.00
5. Step 5: Solve for x
   x = 4,818,013.00/2,399.23
6. Step 6: Final answer
   x = 2,008.15