Finding the Fourth Proportional to 2,428.88, 3,351.82 and 1,380.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,428.88 : 3,351.82 = 1,380.94 : x
2. Step 2: Convert to fraction form
   2,428.88/3,351.82 = 1,380.94/x
3. Step 3: Cross multiply
   2,428.88x = 3,351.82 × 1,380.94
4. Step 4: Simplify right side
   2,428.88x = 4,628,662.31
5. Step 5: Solve for x
   x = 4,628,662.31/2,428.88
6. Step 6: Final answer
   x = 1,905.68