Finding the Fourth Proportional to 820.38, 1,131.39 and 733.98

Step by Step Solution

1. Step 1: Write the proportion equation
   820.38 : 1,131.39 = 733.98 : x
2. Step 2: Convert to fraction form
   820.38/1,131.39 = 733.98/x
3. Step 3: Cross multiply
   820.38x = 1,131.39 × 733.98
4. Step 4: Simplify right side
   820.38x = 830,417.63
5. Step 5: Solve for x
   x = 830,417.63/820.38
6. Step 6: Final answer
   x = 1,012.24