Finding the Fourth Proportional to 2,784.10, 3,839.89 and 1,664.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,784.10 : 3,839.89 = 1,664.82 : x
2. Step 2: Convert to fraction form
   2,784.10/3,839.89 = 1,664.82/x
3. Step 3: Cross multiply
   2,784.10x = 3,839.89 × 1,664.82
4. Step 4: Simplify right side
   2,784.10x = 6,392,715.45
5. Step 5: Solve for x
   x = 6,392,715.45/2,784.10
6. Step 6: Final answer
   x = 2,296.15