Finding the Fourth Proportional to 1,765.78, 2,436.83 and 1,019.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,765.78 : 2,436.83 = 1,019.72 : x
2. Step 2: Convert to fraction form
   1,765.78/2,436.83 = 1,019.72/x
3. Step 3: Cross multiply
   1,765.78x = 2,436.83 × 1,019.72
4. Step 4: Simplify right side
   1,765.78x = 2,484,889.11
5. Step 5: Solve for x
   x = 2,484,889.11/1,765.78
6. Step 6: Final answer
   x = 1,407.25