Finding the Fourth Proportional to 2,859.36, 3,945.27 and 1,810.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,859.36 : 3,945.27 = 1,810.82 : x
2. Step 2: Convert to fraction form
   2,859.36/3,945.27 = 1,810.82/x
3. Step 3: Cross multiply
   2,859.36x = 3,945.27 × 1,810.82
4. Step 4: Simplify right side
   2,859.36x = 7,144,173.82
5. Step 5: Solve for x
   x = 7,144,173.82/2,859.36
6. Step 6: Final answer
   x = 2,498.52