Finding the Fourth Proportional to 3,931.01, 5,424.83 and 2,162.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,931.01 : 5,424.83 = 2,162.63 : x
2. Step 2: Convert to fraction form
   3,931.01/5,424.83 = 2,162.63/x
3. Step 3: Cross multiply
   3,931.01x = 5,424.83 × 2,162.63
4. Step 4: Simplify right side
   3,931.01x = 11,731,900.10
5. Step 5: Solve for x
   x = 11,731,900.10/3,931.01
6. Step 6: Final answer
   x = 2,984.45