Finding the Fourth Proportional to 3,957.04, 5,460.58 and 2,278.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,957.04 : 5,460.58 = 2,278.72 : x
2. Step 2: Convert to fraction form
   3,957.04/5,460.58 = 2,278.72/x
3. Step 3: Cross multiply
   3,957.04x = 5,460.58 × 2,278.72
4. Step 4: Simplify right side
   3,957.04x = 12,443,132.86
5. Step 5: Solve for x
   x = 12,443,132.86/3,957.04
6. Step 6: Final answer
   x = 3,144.56