Finding the Fourth Proportional to 1,804.06, 2,489.61 and 1,105.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,804.06 : 2,489.61 = 1,105.42 : x
2. Step 2: Convert to fraction form
   1,804.06/2,489.61 = 1,105.42/x
3. Step 3: Cross multiply
   1,804.06x = 2,489.61 × 1,105.42
4. Step 4: Simplify right side
   1,804.06x = 2,752,064.69
5. Step 5: Solve for x
   x = 2,752,064.69/1,804.06
6. Step 6: Final answer
   x = 1,525.48