Finding the Fourth Proportional to 3,612.43, 5,418.83 and 1,015.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,612.43 : 5,418.83 = 1,015.57 : x
2. Step 2: Convert to fraction form
   3,612.43/5,418.83 = 1,015.57/x
3. Step 3: Cross multiply
   3,612.43x = 5,418.83 × 1,015.57
4. Step 4: Simplify right side
   3,612.43x = 5,503,190.17
5. Step 5: Solve for x
   x = 5,503,190.17/3,612.43
6. Step 6: Final answer
   x = 1,523.41