Finding the Fourth Proportional to 2,386.56, 3,576.96 and 845.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,386.56 : 3,576.96 = 845.76 : x
2. Step 2: Convert to fraction form
   2,386.56/3,576.96 = 845.76/x
3. Step 3: Cross multiply
   2,386.56x = 3,576.96 × 845.76
4. Step 4: Simplify right side
   2,386.56x = 3,025,249.69
5. Step 5: Solve for x
   x = 3,025,249.69/2,386.56
6. Step 6: Final answer
   x = 1,267.62