Finding the Fourth Proportional to 2,856.12, 3,941.58 and 2,156.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,856.12 : 3,941.58 = 2,156.28 : x
2. Step 2: Convert to fraction form
   2,856.12/3,941.58 = 2,156.28/x
3. Step 3: Cross multiply
   2,856.12x = 3,941.58 × 2,156.28
4. Step 4: Simplify right side
   2,856.12x = 8,499,150.12
5. Step 5: Solve for x
   x = 8,499,150.12/2,856.12
6. Step 6: Final answer
   x = 2,975.77