Finding the Fourth Proportional to 2,810.79, 3,876.69 and 2,392.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,810.79 : 3,876.69 = 2,392.51 : x
2. Step 2: Convert to fraction form
   2,810.79/3,876.69 = 2,392.51/x
3. Step 3: Cross multiply
   2,810.79x = 3,876.69 × 2,392.51
4. Step 4: Simplify right side
   2,810.79x = 9,275,019.59
5. Step 5: Solve for x
   x = 9,275,019.59/2,810.79
6. Step 6: Final answer
   x = 3,299.79