Finding the Fourth Proportional to 1,109.42, 1,662.70 and 560.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.42 : 1,662.70 = 560.37 : x
2. Step 2: Convert to fraction form
   1,109.42/1,662.70 = 560.37/x
3. Step 3: Cross multiply
   1,109.42x = 1,662.70 × 560.37
4. Step 4: Simplify right side
   1,109.42x = 931,727.20
5. Step 5: Solve for x
   x = 931,727.20/1,109.42
6. Step 6: Final answer
   x = 839.83