Finding the Fourth Proportional to 1,018.73, 1,405.88 and 576.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.73 : 1,405.88 = 576.62 : x
2. Step 2: Convert to fraction form
   1,018.73/1,405.88 = 576.62/x
3. Step 3: Cross multiply
   1,018.73x = 1,405.88 × 576.62
4. Step 4: Simplify right side
   1,018.73x = 810,658.53
5. Step 5: Solve for x
   x = 810,658.53/1,018.73
6. Step 6: Final answer
   x = 795.75