Finding the Fourth Proportional to 3,076.76, 4,242.30 and 2,485.46

Step by Step Solution

1. Step 1: Write the proportion equation
   3,076.76 : 4,242.30 = 2,485.46 : x
2. Step 2: Convert to fraction form
   3,076.76/4,242.30 = 2,485.46/x
3. Step 3: Cross multiply
   3,076.76x = 4,242.30 × 2,485.46
4. Step 4: Simplify right side
   3,076.76x = 10,544,066.96
5. Step 5: Solve for x
   x = 10,544,066.96/3,076.76
6. Step 6: Final answer
   x = 3,427.00