Finding the Fourth Proportional to 2,544.30, 3,816.90 and 1,311.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,544.30 : 3,816.90 = 1,311.38 : x
2. Step 2: Convert to fraction form
   2,544.30/3,816.90 = 1,311.38/x
3. Step 3: Cross multiply
   2,544.30x = 3,816.90 × 1,311.38
4. Step 4: Simplify right side
   2,544.30x = 5,005,406.32
5. Step 5: Solve for x
   x = 5,005,406.32/2,544.30
6. Step 6: Final answer
   x = 1,967.30