Finding the Fourth Proportional to 1,804.79, 2,490.59 and 1,019.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,804.79 : 2,490.59 = 1,019.09 : x
2. Step 2: Convert to fraction form
   1,804.79/2,490.59 = 1,019.09/x
3. Step 3: Cross multiply
   1,804.79x = 2,490.59 × 1,019.09
4. Step 4: Simplify right side
   1,804.79x = 2,538,130.27
5. Step 5: Solve for x
   x = 2,538,130.27/1,804.79
6. Step 6: Final answer
   x = 1,406.33