Finding the Fourth Proportional to 2,780.55, 3,843.72 and 2,226.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,780.55 : 3,843.72 = 2,226.51 : x
2. Step 2: Convert to fraction form
   2,780.55/3,843.72 = 2,226.51/x
3. Step 3: Cross multiply
   2,780.55x = 3,843.72 × 2,226.51
4. Step 4: Simplify right side
   2,780.55x = 8,558,081.02
5. Step 5: Solve for x
   x = 8,558,081.02/2,780.55
6. Step 6: Final answer
   x = 3,077.84