Finding the Fourth Proportional to 2,928.72, 4,043.31 and 1,936.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,928.72 : 4,043.31 = 1,936.88 : x
2. Step 2: Convert to fraction form
   2,928.72/4,043.31 = 1,936.88/x
3. Step 3: Cross multiply
   2,928.72x = 4,043.31 × 1,936.88
4. Step 4: Simplify right side
   2,928.72x = 7,831,406.27
5. Step 5: Solve for x
   x = 7,831,406.27/2,928.72
6. Step 6: Final answer
   x = 2,674.00