Finding the Fourth Proportional to 1,128.48, 1,695.32 and 800.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,128.48 : 1,695.32 = 800.23 : x
2. Step 2: Convert to fraction form
   1,128.48/1,695.32 = 800.23/x
3. Step 3: Cross multiply
   1,128.48x = 1,695.32 × 800.23
4. Step 4: Simplify right side
   1,128.48x = 1,356,655.85
5. Step 5: Solve for x
   x = 1,356,655.85/1,128.48
6. Step 6: Final answer
   x = 1,202.19