Finding the Fourth Proportional to 3,101.88, 4,280.31 and 2,513.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,101.88 : 4,280.31 = 2,513.82 : x
2. Step 2: Convert to fraction form
   3,101.88/4,280.31 = 2,513.82/x
3. Step 3: Cross multiply
   3,101.88x = 4,280.31 × 2,513.82
4. Step 4: Simplify right side
   3,101.88x = 10,759,928.88
5. Step 5: Solve for x
   x = 10,759,928.88/3,101.88
6. Step 6: Final answer
   x = 3,468.84