Finding the Fourth Proportional to 1,804.58, 2,490.31 and 1,018.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,804.58 : 2,490.31 = 1,018.61 : x
2. Step 2: Convert to fraction form
   1,804.58/2,490.31 = 1,018.61/x
3. Step 3: Cross multiply
   1,804.58x = 2,490.31 × 1,018.61
4. Step 4: Simplify right side
   1,804.58x = 2,536,652.83
5. Step 5: Solve for x
   x = 2,536,652.83/1,804.58
6. Step 6: Final answer
   x = 1,405.68