Finding the Fourth Proportional to 1,081.62, 1,494.45 and 820.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.62 : 1,494.45 = 820.98 : x
2. Step 2: Convert to fraction form
   1,081.62/1,494.45 = 820.98/x
3. Step 3: Cross multiply
   1,081.62x = 1,494.45 × 820.98
4. Step 4: Simplify right side
   1,081.62x = 1,226,913.56
5. Step 5: Solve for x
   x = 1,226,913.56/1,081.62
6. Step 6: Final answer
   x = 1,134.33