Finding the Fourth Proportional to 1,131.62, 1,561.16 and 800.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.62 : 1,561.16 = 800.33 : x
2. Step 2: Convert to fraction form
   1,131.62/1,561.16 = 800.33/x
3. Step 3: Cross multiply
   1,131.62x = 1,561.16 × 800.33
4. Step 4: Simplify right side
   1,131.62x = 1,249,439.18
5. Step 5: Solve for x
   x = 1,249,439.18/1,131.62
6. Step 6: Final answer
   x = 1,104.12