Finding the Fourth Proportional to 2,067.86, 3,100.29 and 971.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,067.86 : 3,100.29 = 971.61 : x
2. Step 2: Convert to fraction form
   2,067.86/3,100.29 = 971.61/x
3. Step 3: Cross multiply
   2,067.86x = 3,100.29 × 971.61
4. Step 4: Simplify right side
   2,067.86x = 3,012,272.77
5. Step 5: Solve for x
   x = 3,012,272.77/2,067.86
6. Step 6: Final answer
   x = 1,456.71