Finding the Fourth Proportional to 2,031.20, 3,044.64 and 1,338.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,031.20 : 3,044.64 = 1,338.56 : x
2. Step 2: Convert to fraction form
   2,031.20/3,044.64 = 1,338.56/x
3. Step 3: Cross multiply
   2,031.20x = 3,044.64 × 1,338.56
4. Step 4: Simplify right side
   2,031.20x = 4,075,433.32
5. Step 5: Solve for x
   x = 4,075,433.32/2,031.20
6. Step 6: Final answer
   x = 2,006.42