Finding the Fourth Proportional to 2,619.77, 3,922.71 and 1,383.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,619.77 : 3,922.71 = 1,383.44 : x
2. Step 2: Convert to fraction form
   2,619.77/3,922.71 = 1,383.44/x
3. Step 3: Cross multiply
   2,619.77x = 3,922.71 × 1,383.44
4. Step 4: Simplify right side
   2,619.77x = 5,426,814.31
5. Step 5: Solve for x
   x = 5,426,814.31/2,619.77
6. Step 6: Final answer
   x = 2,071.49