Finding the Fourth Proportional to 3,978.26, 5,964.55 and 1,868.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.26 : 5,964.55 = 1,868.71 : x
2. Step 2: Convert to fraction form
   3,978.26/5,964.55 = 1,868.71/x
3. Step 3: Cross multiply
   3,978.26x = 5,964.55 × 1,868.71
4. Step 4: Simplify right side
   3,978.26x = 11,145,975.06
5. Step 5: Solve for x
   x = 11,145,975.06/3,978.26
6. Step 6: Final answer
   x = 2,801.72