Finding the Fourth Proportional to 1,109.09, 1,662.53 and 743.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.09 : 1,662.53 = 743.04 : x
2. Step 2: Convert to fraction form
   1,109.09/1,662.53 = 743.04/x
3. Step 3: Cross multiply
   1,109.09x = 1,662.53 × 743.04
4. Step 4: Simplify right side
   1,109.09x = 1,235,322.58
5. Step 5: Solve for x
   x = 1,235,322.58/1,109.09
6. Step 6: Final answer
   x = 1,113.81