Finding the Fourth Proportional to 2,789.28, 4,184.28 and 841.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,789.28 : 4,184.28 = 841.32 : x
2. Step 2: Convert to fraction form
   2,789.28/4,184.28 = 841.32/x
3. Step 3: Cross multiply
   2,789.28x = 4,184.28 × 841.32
4. Step 4: Simplify right side
   2,789.28x = 3,520,318.45
5. Step 5: Solve for x
   x = 3,520,318.45/2,789.28
6. Step 6: Final answer
   x = 1,262.09