Finding the Fourth Proportional to 2,242.81, 3,093.55 and 1,311.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,242.81 : 3,093.55 = 1,311.31 : x
2. Step 2: Convert to fraction form
   2,242.81/3,093.55 = 1,311.31/x
3. Step 3: Cross multiply
   2,242.81x = 3,093.55 × 1,311.31
4. Step 4: Simplify right side
   2,242.81x = 4,056,603.05
5. Step 5: Solve for x
   x = 4,056,603.05/2,242.81
6. Step 6: Final answer
   x = 1,808.71