Finding the Fourth Proportional to 1,036.69, 1,429.54 and 800.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036.69 : 1,429.54 = 800.68 : x
2. Step 2: Convert to fraction form
   1,036.69/1,429.54 = 800.68/x
3. Step 3: Cross multiply
   1,036.69x = 1,429.54 × 800.68
4. Step 4: Simplify right side
   1,036.69x = 1,144,598.51
5. Step 5: Solve for x
   x = 1,144,598.51/1,036.69
6. Step 6: Final answer
   x = 1,104.09