Finding the Fourth Proportional to 1,112.76, 1,669.32 and 564.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.76 : 1,669.32 = 564.72 : x
2. Step 2: Convert to fraction form
   1,112.76/1,669.32 = 564.72/x
3. Step 3: Cross multiply
   1,112.76x = 1,669.32 × 564.72
4. Step 4: Simplify right side
   1,112.76x = 942,698.39
5. Step 5: Solve for x
   x = 942,698.39/1,112.76
6. Step 6: Final answer
   x = 847.17