Finding the Fourth Proportional to 2,859.89, 3,945.24 and 1,797.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,859.89 : 3,945.24 = 1,797.12 : x
2. Step 2: Convert to fraction form
   2,859.89/3,945.24 = 1,797.12/x
3. Step 3: Cross multiply
   2,859.89x = 3,945.24 × 1,797.12
4. Step 4: Simplify right side
   2,859.89x = 7,090,069.71
5. Step 5: Solve for x
   x = 7,090,069.71/2,859.89
6. Step 6: Final answer
   x = 2,479.15