Finding the Fourth Proportional to 1,761.83, 2,431.56 and 1,015.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,761.83 : 2,431.56 = 1,015.78 : x
2. Step 2: Convert to fraction form
   1,761.83/2,431.56 = 1,015.78/x
3. Step 3: Cross multiply
   1,761.83x = 2,431.56 × 1,015.78
4. Step 4: Simplify right side
   1,761.83x = 2,469,917.86
5. Step 5: Solve for x
   x = 2,469,917.86/1,761.83
6. Step 6: Final answer
   x = 1,401.90