Finding the Fourth Proportional to 2,857.02, 4,291.72 and 2,419.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,857.02 : 4,291.72 = 2,419.17 : x
2. Step 2: Convert to fraction form
   2,857.02/4,291.72 = 2,419.17/x
3. Step 3: Cross multiply
   2,857.02x = 4,291.72 × 2,419.17
4. Step 4: Simplify right side
   2,857.02x = 10,382,400.27
5. Step 5: Solve for x
   x = 10,382,400.27/2,857.02
6. Step 6: Final answer
   x = 3,634.00