Finding the Fourth Proportional to 2,439.12, 3,365.82 and 1,377.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,439.12 : 3,365.82 = 1,377.06 : x
2. Step 2: Convert to fraction form
   2,439.12/3,365.82 = 1,377.06/x
3. Step 3: Cross multiply
   2,439.12x = 3,365.82 × 1,377.06
4. Step 4: Simplify right side
   2,439.12x = 4,634,936.09
5. Step 5: Solve for x
   x = 4,634,936.09/2,439.12
6. Step 6: Final answer
   x = 1,900.25