Finding the Fourth Proportional to 2,083.23, 3,109.64 and 1,820.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,083.23 : 3,109.64 = 1,820.49 : x
2. Step 2: Convert to fraction form
   2,083.23/3,109.64 = 1,820.49/x
3. Step 3: Cross multiply
   2,083.23x = 3,109.64 × 1,820.49
4. Step 4: Simplify right side
   2,083.23x = 5,661,068.52
5. Step 5: Solve for x
   x = 5,661,068.52/2,083.23
6. Step 6: Final answer
   x = 2,717.45