Finding the Fourth Proportional to 2,273.94, 3,137.04 and 1,389.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,273.94 : 3,137.04 = 1,389.42 : x
2. Step 2: Convert to fraction form
   2,273.94/3,137.04 = 1,389.42/x
3. Step 3: Cross multiply
   2,273.94x = 3,137.04 × 1,389.42
4. Step 4: Simplify right side
   2,273.94x = 4,358,666.12
5. Step 5: Solve for x
   x = 4,358,666.12/2,273.94
6. Step 6: Final answer
   x = 1,916.79