Finding the Fourth Proportional to 3,561.75, 5,340.56 and 1,479.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,561.75 : 5,340.56 = 1,479.38 : x
2. Step 2: Convert to fraction form
   3,561.75/5,340.56 = 1,479.38/x
3. Step 3: Cross multiply
   3,561.75x = 5,340.56 × 1,479.38
4. Step 4: Simplify right side
   3,561.75x = 7,900,683.55
5. Step 5: Solve for x
   x = 7,900,683.55/3,561.75
6. Step 6: Final answer
   x = 2,218.20