Finding the Fourth Proportional to 2,068.12, 2,853.49 and 1,228.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,068.12 : 2,853.49 = 1,228.47 : x
2. Step 2: Convert to fraction form
   2,068.12/2,853.49 = 1,228.47/x
3. Step 3: Cross multiply
   2,068.12x = 2,853.49 × 1,228.47
4. Step 4: Simplify right side
   2,068.12x = 3,505,426.86
5. Step 5: Solve for x
   x = 3,505,426.86/2,068.12
6. Step 6: Final answer
   x = 1,694.98