Finding the Fourth Proportional to 2,789.06, 4,184.24 and 841.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,789.06 : 4,184.24 = 841.28 : x
2. Step 2: Convert to fraction form
   2,789.06/4,184.24 = 841.28/x
3. Step 3: Cross multiply
   2,789.06x = 4,184.24 × 841.28
4. Step 4: Simplify right side
   2,789.06x = 3,520,117.43
5. Step 5: Solve for x
   x = 3,520,117.43/2,789.06
6. Step 6: Final answer
   x = 1,262.12