Finding the Fourth Proportional to 1,804.59, 2,490.18 and 1,018.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,804.59 : 2,490.18 = 1,018.59 : x
2. Step 2: Convert to fraction form
   1,804.59/2,490.18 = 1,018.59/x
3. Step 3: Cross multiply
   1,804.59x = 2,490.18 × 1,018.59
4. Step 4: Simplify right side
   1,804.59x = 2,536,459.29
5. Step 5: Solve for x
   x = 2,536,459.29/1,804.59
6. Step 6: Final answer
   x = 1,405.56