Finding the Fourth Proportional to 2,771.56, 4,152.77 and 2,485.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,771.56 : 4,152.77 = 2,485.76 : x
2. Step 2: Convert to fraction form
   2,771.56/4,152.77 = 2,485.76/x
3. Step 3: Cross multiply
   2,771.56x = 4,152.77 × 2,485.76
4. Step 4: Simplify right side
   2,771.56x = 10,322,777.13
5. Step 5: Solve for x
   x = 10,322,777.13/2,771.56
6. Step 6: Final answer
   x = 3,724.54