Finding the Fourth Proportional to 2,405.56, 3,608.30 and 1,019.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.56 : 3,608.30 = 1,019.80 : x
2. Step 2: Convert to fraction form
   2,405.56/3,608.30 = 1,019.80/x
3. Step 3: Cross multiply
   2,405.56x = 3,608.30 × 1,019.80
4. Step 4: Simplify right side
   2,405.56x = 3,679,744.34
5. Step 5: Solve for x
   x = 3,679,744.34/2,405.56
6. Step 6: Final answer
   x = 1,529.68