Finding the Fourth Proportional to 1,112.77, 1,536.12 and 799.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.77 : 1,536.12 = 799.61 : x
2. Step 2: Convert to fraction form
   1,112.77/1,536.12 = 799.61/x
3. Step 3: Cross multiply
   1,112.77x = 1,536.12 × 799.61
4. Step 4: Simplify right side
   1,112.77x = 1,228,289.23
5. Step 5: Solve for x
   x = 1,228,289.23/1,112.77
6. Step 6: Final answer
   x = 1,103.81