Finding the Fourth Proportional to 1,112.57, 1,667.51 and 799.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.57 : 1,667.51 = 799.82 : x
2. Step 2: Convert to fraction form
   1,112.57/1,667.51 = 799.82/x
3. Step 3: Cross multiply
   1,112.57x = 1,667.51 × 799.82
4. Step 4: Simplify right side
   1,112.57x = 1,333,703.85
5. Step 5: Solve for x
   x = 1,333,703.85/1,112.57
6. Step 6: Final answer
   x = 1,198.76