Finding the Fourth Proportional to 2,176.15, 3,002.03 and 1,291.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,176.15 : 3,002.03 = 1,291.33 : x
2. Step 2: Convert to fraction form
   2,176.15/3,002.03 = 1,291.33/x
3. Step 3: Cross multiply
   2,176.15x = 3,002.03 × 1,291.33
4. Step 4: Simplify right side
   2,176.15x = 3,876,608.73
5. Step 5: Solve for x
   x = 3,876,608.73/2,176.15
6. Step 6: Final answer
   x = 1,781.41