Finding the Fourth Proportional to 3,953.82, 5,456.90 and 2,381.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,953.82 : 5,456.90 = 2,381.91 : x
2. Step 2: Convert to fraction form
   3,953.82/5,456.90 = 2,381.91/x
3. Step 3: Cross multiply
   3,953.82x = 5,456.90 × 2,381.91
4. Step 4: Simplify right side
   3,953.82x = 12,997,832.77
5. Step 5: Solve for x
   x = 12,997,832.77/3,953.82
6. Step 6: Final answer
   x = 3,287.41