Finding the Fourth Proportional to 3,696.57, 5,101.43 and 2,017.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,696.57 : 5,101.43 = 2,017.91 : x
2. Step 2: Convert to fraction form
   3,696.57/5,101.43 = 2,017.91/x
3. Step 3: Cross multiply
   3,696.57x = 5,101.43 × 2,017.91
4. Step 4: Simplify right side
   3,696.57x = 10,294,229.28
5. Step 5: Solve for x
   x = 10,294,229.28/3,696.57
6. Step 6: Final answer
   x = 2,784.81