Finding the Fourth Proportional to 1,112.38, 1,667.57 and 564.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.38 : 1,667.57 = 564.28 : x
2. Step 2: Convert to fraction form
   1,112.38/1,667.57 = 564.28/x
3. Step 3: Cross multiply
   1,112.38x = 1,667.57 × 564.28
4. Step 4: Simplify right side
   1,112.38x = 940,965.24
5. Step 5: Solve for x
   x = 940,965.24/1,112.38
6. Step 6: Final answer
   x = 845.91