Finding the Fourth Proportional to 2,479.76, 3,727.34 and 1,561.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,479.76 : 3,727.34 = 1,561.22 : x
2. Step 2: Convert to fraction form
   2,479.76/3,727.34 = 1,561.22/x
3. Step 3: Cross multiply
   2,479.76x = 3,727.34 × 1,561.22
4. Step 4: Simplify right side
   2,479.76x = 5,819,171.31
5. Step 5: Solve for x
   x = 5,819,171.31/2,479.76
6. Step 6: Final answer
   x = 2,346.67