Finding the Fourth Proportional to 2,429.10, 3,351.78 and 1,380.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.10 : 3,351.78 = 1,380.96 : x
2. Step 2: Convert to fraction form
   2,429.10/3,351.78 = 1,380.96/x
3. Step 3: Cross multiply
   2,429.10x = 3,351.78 × 1,380.96
4. Step 4: Simplify right side
   2,429.10x = 4,628,674.11
5. Step 5: Solve for x
   x = 4,628,674.11/2,429.10
6. Step 6: Final answer
   x = 1,905.51