Finding the Fourth Proportional to 2,771.78, 3,819.78 and 1,984.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,771.78 : 3,819.78 = 1,984.46 : x
2. Step 2: Convert to fraction form
   2,771.78/3,819.78 = 1,984.46/x
3. Step 3: Cross multiply
   2,771.78x = 3,819.78 × 1,984.46
4. Step 4: Simplify right side
   2,771.78x = 7,580,200.62
5. Step 5: Solve for x
   x = 7,580,200.62/2,771.78
6. Step 6: Final answer
   x = 2,734.78