Finding the Fourth Proportional to 2,015.95, 3,017.73 and 1,286.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,015.95 : 3,017.73 = 1,286.03 : x
2. Step 2: Convert to fraction form
   2,015.95/3,017.73 = 1,286.03/x
3. Step 3: Cross multiply
   2,015.95x = 3,017.73 × 1,286.03
4. Step 4: Simplify right side
   2,015.95x = 3,880,891.31
5. Step 5: Solve for x
   x = 3,880,891.31/2,015.95
6. Step 6: Final answer
   x = 1,925.09