Finding the Fourth Proportional to 3,878.89, 5,818.41 and 957.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,878.89 : 5,818.41 = 957.22 : x
2. Step 2: Convert to fraction form
   3,878.89/5,818.41 = 957.22/x
3. Step 3: Cross multiply
   3,878.89x = 5,818.41 × 957.22
4. Step 4: Simplify right side
   3,878.89x = 5,569,483.87
5. Step 5: Solve for x
   x = 5,569,483.87/3,878.89
6. Step 6: Final answer
   x = 1,435.85