Finding the Fourth Proportional to 1,298.49, 1,791.25 and 800.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,298.49 : 1,791.25 = 800.34 : x
2. Step 2: Convert to fraction form
   1,298.49/1,791.25 = 800.34/x
3. Step 3: Cross multiply
   1,298.49x = 1,791.25 × 800.34
4. Step 4: Simplify right side
   1,298.49x = 1,433,609.03
5. Step 5: Solve for x
   x = 1,433,609.03/1,298.49
6. Step 6: Final answer
   x = 1,104.06