Finding the Fourth Proportional to 2,618.57, 3,923.17 and 1,383.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,618.57 : 3,923.17 = 1,383.22 : x
2. Step 2: Convert to fraction form
   2,618.57/3,923.17 = 1,383.22/x
3. Step 3: Cross multiply
   2,618.57x = 3,923.17 × 1,383.22
4. Step 4: Simplify right side
   2,618.57x = 5,426,607.21
5. Step 5: Solve for x
   x = 5,426,607.21/2,618.57
6. Step 6: Final answer
   x = 2,072.36