Finding the Fourth Proportional to 2,776.90, 3,849.67 and 2,628.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,776.90 : 3,849.67 = 2,628.94 : x
2. Step 2: Convert to fraction form
   2,776.90/3,849.67 = 2,628.94/x
3. Step 3: Cross multiply
   2,776.90x = 3,849.67 × 2,628.94
4. Step 4: Simplify right side
   2,776.90x = 10,120,551.45
5. Step 5: Solve for x
   x = 10,120,551.45/2,776.90
6. Step 6: Final answer
   x = 3,644.55