Finding the Fourth Proportional to 3,851.16, 5,315.28 and 2,280.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,851.16 : 5,315.28 = 2,280.02 : x
2. Step 2: Convert to fraction form
   3,851.16/5,315.28 = 2,280.02/x
3. Step 3: Cross multiply
   3,851.16x = 5,315.28 × 2,280.02
4. Step 4: Simplify right side
   3,851.16x = 12,118,944.71
5. Step 5: Solve for x
   x = 12,118,944.71/3,851.16
6. Step 6: Final answer
   x = 3,146.83