Finding the Fourth Proportional to 1,344.04, 1,853.82 and 820.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,344.04 : 1,853.82 = 820.36 : x
2. Step 2: Convert to fraction form
   1,344.04/1,853.82 = 820.36/x
3. Step 3: Cross multiply
   1,344.04x = 1,853.82 × 820.36
4. Step 4: Simplify right side
   1,344.04x = 1,520,799.78
5. Step 5: Solve for x
   x = 1,520,799.78/1,344.04
6. Step 6: Final answer
   x = 1,131.51