Finding the Fourth Proportional to 1,857.49, 2,563.18 and 1,018.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,857.49 : 2,563.18 = 1,018.18 : x
2. Step 2: Convert to fraction form
   1,857.49/2,563.18 = 1,018.18/x
3. Step 3: Cross multiply
   1,857.49x = 2,563.18 × 1,018.18
4. Step 4: Simplify right side
   1,857.49x = 2,609,778.61
5. Step 5: Solve for x
   x = 2,609,778.61/1,857.49
6. Step 6: Final answer
   x = 1,405.00