Finding the Fourth Proportional to 2,499.21, 3,449.33 and 2,388.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.21 : 3,449.33 = 2,388.49 : x
2. Step 2: Convert to fraction form
   2,499.21/3,449.33 = 2,388.49/x
3. Step 3: Cross multiply
   2,499.21x = 3,449.33 × 2,388.49
4. Step 4: Simplify right side
   2,499.21x = 8,238,690.21
5. Step 5: Solve for x
   x = 8,238,690.21/2,499.21
6. Step 6: Final answer
   x = 3,296.52