Finding the Fourth Proportional to 2,846.80, 3,921.78 and 2,725.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,846.80 : 3,921.78 = 2,725.30 : x
2. Step 2: Convert to fraction form
   2,846.80/3,921.78 = 2,725.30/x
3. Step 3: Cross multiply
   2,846.80x = 3,921.78 × 2,725.30
4. Step 4: Simplify right side
   2,846.80x = 10,688,027.03
5. Step 5: Solve for x
   x = 10,688,027.03/2,846.80
6. Step 6: Final answer
   x = 3,754.40