Finding the Fourth Proportional to 1,397.99, 1,929.27 and 800.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397.99 : 1,929.27 = 800.59 : x
2. Step 2: Convert to fraction form
   1,397.99/1,929.27 = 800.59/x
3. Step 3: Cross multiply
   1,397.99x = 1,929.27 × 800.59
4. Step 4: Simplify right side
   1,397.99x = 1,544,553.92
5. Step 5: Solve for x
   x = 1,544,553.92/1,397.99
6. Step 6: Final answer
   x = 1,104.84