Finding the Fourth Proportional to 789.34, 1,184.17 and 356.50

Step by Step Solution

1. Step 1: Write the proportion equation
   789.34 : 1,184.17 = 356.50 : x
2. Step 2: Convert to fraction form
   789.34/1,184.17 = 356.50/x
3. Step 3: Cross multiply
   789.34x = 1,184.17 × 356.50
4. Step 4: Simplify right side
   789.34x = 422,156.61
5. Step 5: Solve for x
   x = 422,156.61/789.34
6. Step 6: Final answer
   x = 534.82