Finding the Fourth Proportional to 2,039.11, 3,057.43 and 1,113.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.11 : 3,057.43 = 1,113.38 : x
2. Step 2: Convert to fraction form
   2,039.11/3,057.43 = 1,113.38/x
3. Step 3: Cross multiply
   2,039.11x = 3,057.43 × 1,113.38
4. Step 4: Simplify right side
   2,039.11x = 3,404,060.56
5. Step 5: Solve for x
   x = 3,404,060.56/2,039.11
6. Step 6: Final answer
   x = 1,669.39