Finding the Fourth Proportional to 2,162.81, 3,228.41 and 1,856.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.81 : 3,228.41 = 1,856.63 : x
2. Step 2: Convert to fraction form
   2,162.81/3,228.41 = 1,856.63/x
3. Step 3: Cross multiply
   2,162.81x = 3,228.41 × 1,856.63
4. Step 4: Simplify right side
   2,162.81x = 5,993,975.57
5. Step 5: Solve for x
   x = 5,993,975.57/2,162.81
6. Step 6: Final answer
   x = 2,771.38