Finding the Fourth Proportional to 2,260.77, 3,389.52 and 872.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,260.77 : 3,389.52 = 872.94 : x
2. Step 2: Convert to fraction form
   2,260.77/3,389.52 = 872.94/x
3. Step 3: Cross multiply
   2,260.77x = 3,389.52 × 872.94
4. Step 4: Simplify right side
   2,260.77x = 2,958,847.59
5. Step 5: Solve for x
   x = 2,958,847.59/2,260.77
6. Step 6: Final answer
   x = 1,308.78