Finding the Fourth Proportional to 3,957.82, 5,463.17 and 2,279.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,957.82 : 5,463.17 = 2,279.91 : x
2. Step 2: Convert to fraction form
   3,957.82/5,463.17 = 2,279.91/x
3. Step 3: Cross multiply
   3,957.82x = 5,463.17 × 2,279.91
4. Step 4: Simplify right side
   3,957.82x = 12,455,514.30
5. Step 5: Solve for x
   x = 12,455,514.30/3,957.82
6. Step 6: Final answer
   x = 3,147.06