Finding the Fourth Proportional to 2,371.62, 3,556.52 and 1,139.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,371.62 : 3,556.52 = 1,139.61 : x
2. Step 2: Convert to fraction form
   2,371.62/3,556.52 = 1,139.61/x
3. Step 3: Cross multiply
   2,371.62x = 3,556.52 × 1,139.61
4. Step 4: Simplify right side
   2,371.62x = 4,053,045.76
5. Step 5: Solve for x
   x = 4,053,045.76/2,371.62
6. Step 6: Final answer
   x = 1,708.98