Finding the Fourth Proportional to 1,112.71, 1,665.98 and 562.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.71 : 1,665.98 = 562.20 : x
2. Step 2: Convert to fraction form
   1,112.71/1,665.98 = 562.20/x
3. Step 3: Cross multiply
   1,112.71x = 1,665.98 × 562.20
4. Step 4: Simplify right side
   1,112.71x = 936,613.96
5. Step 5: Solve for x
   x = 936,613.96/1,112.71
6. Step 6: Final answer
   x = 841.74