Finding the Fourth Proportional to 2,776.23, 3,829.43 and 2,111.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,776.23 : 3,829.43 = 2,111.63 : x
2. Step 2: Convert to fraction form
   2,776.23/3,829.43 = 2,111.63/x
3. Step 3: Cross multiply
   2,776.23x = 3,829.43 × 2,111.63
4. Step 4: Simplify right side
   2,776.23x = 8,086,320.12
5. Step 5: Solve for x
   x = 8,086,320.12/2,776.23
6. Step 6: Final answer
   x = 2,912.70