Finding the Fourth Proportional to 3,957.42, 5,461.56 and 2,279.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,957.42 : 5,461.56 = 2,279.37 : x
2. Step 2: Convert to fraction form
   3,957.42/5,461.56 = 2,279.37/x
3. Step 3: Cross multiply
   3,957.42x = 5,461.56 × 2,279.37
4. Step 4: Simplify right side
   3,957.42x = 12,448,916.02
5. Step 5: Solve for x
   x = 12,448,916.02/3,957.42
6. Step 6: Final answer
   x = 3,145.72