Finding the Fourth Proportional to 2,840.72, 3,917.84 and 2,773.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,840.72 : 3,917.84 = 2,773.08 : x
2. Step 2: Convert to fraction form
   2,840.72/3,917.84 = 2,773.08/x
3. Step 3: Cross multiply
   2,840.72x = 3,917.84 × 2,773.08
4. Step 4: Simplify right side
   2,840.72x = 10,864,483.75
5. Step 5: Solve for x
   x = 10,864,483.75/2,840.72
6. Step 6: Final answer
   x = 3,824.55