Finding the Fourth Proportional to 1,857.55, 2,563.39 and 1,018.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,857.55 : 2,563.39 = 1,018.26 : x
2. Step 2: Convert to fraction form
   1,857.55/2,563.39 = 1,018.26/x
3. Step 3: Cross multiply
   1,857.55x = 2,563.39 × 1,018.26
4. Step 4: Simplify right side
   1,857.55x = 2,610,179.59
5. Step 5: Solve for x
   x = 2,610,179.59/1,857.55
6. Step 6: Final answer
   x = 1,405.17