Finding the Fourth Proportional to 2,453.76, 3,679.20 and 1,479.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,453.76 : 3,679.20 = 1,479.24 : x
2. Step 2: Convert to fraction form
   2,453.76/3,679.20 = 1,479.24/x
3. Step 3: Cross multiply
   2,453.76x = 3,679.20 × 1,479.24
4. Step 4: Simplify right side
   2,453.76x = 5,442,419.81
5. Step 5: Solve for x
   x = 5,442,419.81/2,453.76
6. Step 6: Final answer
   x = 2,217.99