Finding the Fourth Proportional to 1,109.14, 1,662.67 and 560.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.14 : 1,662.67 = 560.71 : x
2. Step 2: Convert to fraction form
   1,109.14/1,662.67 = 560.71/x
3. Step 3: Cross multiply
   1,109.14x = 1,662.67 × 560.71
4. Step 4: Simplify right side
   1,109.14x = 932,275.70
5. Step 5: Solve for x
   x = 932,275.70/1,109.14
6. Step 6: Final answer
   x = 840.54