Finding the Fourth Proportional to 2,109.65, 3,164.48 and 1,383.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.65 : 3,164.48 = 1,383.82 : x
2. Step 2: Convert to fraction form
   2,109.65/3,164.48 = 1,383.82/x
3. Step 3: Cross multiply
   2,109.65x = 3,164.48 × 1,383.82
4. Step 4: Simplify right side
   2,109.65x = 4,379,066.26
5. Step 5: Solve for x
   x = 4,379,066.26/2,109.65
6. Step 6: Final answer
   x = 2,075.74