Finding the Fourth Proportional to 2,862.71, 4,291.33 and 1,216.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,862.71 : 4,291.33 = 1,216.99 : x
2. Step 2: Convert to fraction form
   2,862.71/4,291.33 = 1,216.99/x
3. Step 3: Cross multiply
   2,862.71x = 4,291.33 × 1,216.99
4. Step 4: Simplify right side
   2,862.71x = 5,222,505.70
5. Step 5: Solve for x
   x = 5,222,505.70/2,862.71
6. Step 6: Final answer
   x = 1,824.32