Finding the Fourth Proportional to 4,103.71, 6,156.16 and 1,638.34

Step by Step Solution

1. Step 1: Write the proportion equation
   4,103.71 : 6,156.16 = 1,638.34 : x
2. Step 2: Convert to fraction form
   4,103.71/6,156.16 = 1,638.34/x
3. Step 3: Cross multiply
   4,103.71x = 6,156.16 × 1,638.34
4. Step 4: Simplify right side
   4,103.71x = 10,085,863.69
5. Step 5: Solve for x
   x = 10,085,863.69/4,103.71
6. Step 6: Final answer
   x = 2,457.74