Finding the Fourth Proportional to 3,964.59, 5,938.81 and 1,878.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,964.59 : 5,938.81 = 1,878.27 : x
2. Step 2: Convert to fraction form
   3,964.59/5,938.81 = 1,878.27/x
3. Step 3: Cross multiply
   3,964.59x = 5,938.81 × 1,878.27
4. Step 4: Simplify right side
   3,964.59x = 11,154,679.27
5. Step 5: Solve for x
   x = 11,154,679.27/3,964.59
6. Step 6: Final answer
   x = 2,813.58