Finding the Fourth Proportional to 2,454.86, 3,683.21 and 1,139.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,454.86 : 3,683.21 = 1,139.27 : x
2. Step 2: Convert to fraction form
   2,454.86/3,683.21 = 1,139.27/x
3. Step 3: Cross multiply
   2,454.86x = 3,683.21 × 1,139.27
4. Step 4: Simplify right side
   2,454.86x = 4,196,146.54
5. Step 5: Solve for x
   x = 4,196,146.54/2,454.86
6. Step 6: Final answer
   x = 1,709.32