Finding the Fourth Proportional to 3,948.42, 5,448.78 and 2,180.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,948.42 : 5,448.78 = 2,180.10 : x
2. Step 2: Convert to fraction form
   3,948.42/5,448.78 = 2,180.10/x
3. Step 3: Cross multiply
   3,948.42x = 5,448.78 × 2,180.10
4. Step 4: Simplify right side
   3,948.42x = 11,878,885.28
5. Step 5: Solve for x
   x = 11,878,885.28/3,948.42
6. Step 6: Final answer
   x = 3,008.52