Finding the Fourth Proportional to 2,846.73, 3,928.98 and 2,142.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,846.73 : 3,928.98 = 2,142.09 : x
2. Step 2: Convert to fraction form
   2,846.73/3,928.98 = 2,142.09/x
3. Step 3: Cross multiply
   2,846.73x = 3,928.98 × 2,142.09
4. Step 4: Simplify right side
   2,846.73x = 8,416,228.77
5. Step 5: Solve for x
   x = 8,416,228.77/2,846.73
6. Step 6: Final answer
   x = 2,956.45