Finding the Fourth Proportional to 2,162.81, 3,242.67 and 845.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.81 : 3,242.67 = 845.54 : x
2. Step 2: Convert to fraction form
   2,162.81/3,242.67 = 845.54/x
3. Step 3: Cross multiply
   2,162.81x = 3,242.67 × 845.54
4. Step 4: Simplify right side
   2,162.81x = 2,741,807.19
5. Step 5: Solve for x
   x = 2,741,807.19/2,162.81
6. Step 6: Final answer
   x = 1,267.71