Finding the Fourth Proportional to 2,864.78, 4,296.06 and 1,015.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,864.78 : 4,296.06 = 1,015.55 : x
2. Step 2: Convert to fraction form
   2,864.78/4,296.06 = 1,015.55/x
3. Step 3: Cross multiply
   2,864.78x = 4,296.06 × 1,015.55
4. Step 4: Simplify right side
   2,864.78x = 4,362,863.73
5. Step 5: Solve for x
   x = 4,362,863.73/2,864.78
6. Step 6: Final answer
   x = 1,522.93