Finding the Fourth Proportional to 2,385.88, 3,575.94 and 1,015

Step by Step Solution

1. Step 1: Write the proportion equation
   2,385.88 : 3,575.94 = 1,015 : x
2. Step 2: Convert to fraction form
   2,385.88/3,575.94 = 1,015/x
3. Step 3: Cross multiply
   2,385.88x = 3,575.94 × 1,015
4. Step 4: Simplify right side
   2,385.88x = 3,629,579.10
5. Step 5: Solve for x
   x = 3,629,579.10/2,385.88
6. Step 6: Final answer
   x = 1,521.27