Finding the Fourth Proportional to 1,967.94, 2,950.25 and 871.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,967.94 : 2,950.25 = 871.72 : x
2. Step 2: Convert to fraction form
   1,967.94/2,950.25 = 871.72/x
3. Step 3: Cross multiply
   1,967.94x = 2,950.25 × 871.72
4. Step 4: Simplify right side
   1,967.94x = 2,571,780.20
5. Step 5: Solve for x
   x = 2,571,780.20/1,967.94
6. Step 6: Final answer
   x = 1,306.84