Finding the Fourth Proportional to 3,923.72, 5,886.34 and 1,326.84

Step by Step Solution

1. Step 1: Write the proportion equation
   3,923.72 : 5,886.34 = 1,326.84 : x
2. Step 2: Convert to fraction form
   3,923.72/5,886.34 = 1,326.84/x
3. Step 3: Cross multiply
   3,923.72x = 5,886.34 × 1,326.84
4. Step 4: Simplify right side
   3,923.72x = 7,810,231.37
5. Step 5: Solve for x
   x = 7,810,231.37/3,923.72
6. Step 6: Final answer
   x = 1,990.52