Finding the Fourth Proportional to 2,619.36, 3,924.43 and 1,384.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,619.36 : 3,924.43 = 1,384.05 : x
2. Step 2: Convert to fraction form
   2,619.36/3,924.43 = 1,384.05/x
3. Step 3: Cross multiply
   2,619.36x = 3,924.43 × 1,384.05
4. Step 4: Simplify right side
   2,619.36x = 5,431,607.34
5. Step 5: Solve for x
   x = 5,431,607.34/2,619.36
6. Step 6: Final answer
   x = 2,073.64