Finding the Fourth Proportional to 1,967.69, 2,950.17 and 871.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,967.69 : 2,950.17 = 871.46 : x
2. Step 2: Convert to fraction form
   1,967.69/2,950.17 = 871.46/x
3. Step 3: Cross multiply
   1,967.69x = 2,950.17 × 871.46
4. Step 4: Simplify right side
   1,967.69x = 2,570,955.15
5. Step 5: Solve for x
   x = 2,570,955.15/1,967.69
6. Step 6: Final answer
   x = 1,306.59