Finding the Fourth Proportional to 1,276.56, 1,761.89 and 833.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,276.56 : 1,761.89 = 833.69 : x
2. Step 2: Convert to fraction form
   1,276.56/1,761.89 = 833.69/x
3. Step 3: Cross multiply
   1,276.56x = 1,761.89 × 833.69
4. Step 4: Simplify right side
   1,276.56x = 1,468,857.10
5. Step 5: Solve for x
   x = 1,468,857.10/1,276.56
6. Step 6: Final answer
   x = 1,150.64