Finding the Fourth Proportional to 2,139.03, 3,207.69 and 1,359.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139.03 : 3,207.69 = 1,359.54 : x
2. Step 2: Convert to fraction form
   2,139.03/3,207.69 = 1,359.54/x
3. Step 3: Cross multiply
   2,139.03x = 3,207.69 × 1,359.54
4. Step 4: Simplify right side
   2,139.03x = 4,360,982.86
5. Step 5: Solve for x
   x = 4,360,982.86/2,139.03
6. Step 6: Final answer
   x = 2,038.77