Finding the Fourth Proportional to 1,162.78, 1,599.82 and 1,015.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.78 : 1,599.82 = 1,015.77 : x
2. Step 2: Convert to fraction form
   1,162.78/1,599.82 = 1,015.77/x
3. Step 3: Cross multiply
   1,162.78x = 1,599.82 × 1,015.77
4. Step 4: Simplify right side
   1,162.78x = 1,625,049.16
5. Step 5: Solve for x
   x = 1,625,049.16/1,162.78
6. Step 6: Final answer
   x = 1,397.56