Finding the Fourth Proportional to 3,931.08, 5,424.78 and 2,162.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,931.08 : 5,424.78 = 2,162.69 : x
2. Step 2: Convert to fraction form
   3,931.08/5,424.78 = 2,162.69/x
3. Step 3: Cross multiply
   3,931.08x = 5,424.78 × 2,162.69
4. Step 4: Simplify right side
   3,931.08x = 11,732,090.33
5. Step 5: Solve for x
   x = 11,732,090.33/3,931.08
6. Step 6: Final answer
   x = 2,984.44