Finding the Fourth Proportional to 1,765.60, 2,436.78 and 1,019.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,765.60 : 2,436.78 = 1,019.56 : x
2. Step 2: Convert to fraction form
   1,765.60/2,436.78 = 1,019.56/x
3. Step 3: Cross multiply
   1,765.60x = 2,436.78 × 1,019.56
4. Step 4: Simplify right side
   1,765.60x = 2,484,443.42
5. Step 5: Solve for x
   x = 2,484,443.42/1,765.60
6. Step 6: Final answer
   x = 1,407.14