Finding the Fourth Proportional to 1,804.32, 2,489.88 and 1,018.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,804.32 : 2,489.88 = 1,018.41 : x
2. Step 2: Convert to fraction form
   1,804.32/2,489.88 = 1,018.41/x
3. Step 3: Cross multiply
   1,804.32x = 2,489.88 × 1,018.41
4. Step 4: Simplify right side
   1,804.32x = 2,535,718.69
5. Step 5: Solve for x
   x = 2,535,718.69/1,804.32
6. Step 6: Final answer
   x = 1,405.36