Finding the Fourth Proportional to 3,953.86, 5,456.18 and 2,275.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,953.86 : 5,456.18 = 2,275.81 : x
2. Step 2: Convert to fraction form
   3,953.86/5,456.18 = 2,275.81/x
3. Step 3: Cross multiply
   3,953.86x = 5,456.18 × 2,275.81
4. Step 4: Simplify right side
   3,953.86x = 12,417,229.01
5. Step 5: Solve for x
   x = 12,417,229.01/3,953.86
6. Step 6: Final answer
   x = 3,140.53