Finding the Fourth Proportional to 1,809.57, 2,496.30 and 1,219.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,809.57 : 2,496.30 = 1,219.08 : x
2. Step 2: Convert to fraction form
   1,809.57/2,496.30 = 1,219.08/x
3. Step 3: Cross multiply
   1,809.57x = 2,496.30 × 1,219.08
4. Step 4: Simplify right side
   1,809.57x = 3,043,189.40
5. Step 5: Solve for x
   x = 3,043,189.40/1,809.57
6. Step 6: Final answer
   x = 1,681.72