Finding the Fourth Proportional to 2,097.18, 3,142.24 and 1,479.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,097.18 : 3,142.24 = 1,479.78 : x
2. Step 2: Convert to fraction form
   2,097.18/3,142.24 = 1,479.78/x
3. Step 3: Cross multiply
   2,097.18x = 3,142.24 × 1,479.78
4. Step 4: Simplify right side
   2,097.18x = 4,649,823.91
5. Step 5: Solve for x
   x = 4,649,823.91/2,097.18
6. Step 6: Final answer
   x = 2,217.18