Finding the Fourth Proportional to 1,018.14, 1,405.10 and 576.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.14 : 1,405.10 = 576.15 : x
2. Step 2: Convert to fraction form
   1,018.14/1,405.10 = 576.15/x
3. Step 3: Cross multiply
   1,018.14x = 1,405.10 × 576.15
4. Step 4: Simplify right side
   1,018.14x = 809,541.30
5. Step 5: Solve for x
   x = 809,541.30/1,018.14
6. Step 6: Final answer
   x = 795.12