Finding the Fourth Proportional to 1,804.38, 2,490.06 and 1,018.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,804.38 : 2,490.06 = 1,018.48 : x
2. Step 2: Convert to fraction form
   1,804.38/2,490.06 = 1,018.48/x
3. Step 3: Cross multiply
   1,804.38x = 2,490.06 × 1,018.48
4. Step 4: Simplify right side
   1,804.38x = 2,536,076.31
5. Step 5: Solve for x
   x = 2,536,076.31/1,804.38
6. Step 6: Final answer
   x = 1,405.51