Finding the Fourth Proportional to 2,162.02, 3,243.34 and 845.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.02 : 3,243.34 = 845.55 : x
2. Step 2: Convert to fraction form
   2,162.02/3,243.34 = 845.55/x
3. Step 3: Cross multiply
   2,162.02x = 3,243.34 × 845.55
4. Step 4: Simplify right side
   2,162.02x = 2,742,406.14
5. Step 5: Solve for x
   x = 2,742,406.14/2,162.02
6. Step 6: Final answer
   x = 1,268.45