Finding the Fourth Proportional to 2,068.16, 2,853.77 and 1,217.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,068.16 : 2,853.77 = 1,217.05 : x
2. Step 2: Convert to fraction form
   2,068.16/2,853.77 = 1,217.05/x
3. Step 3: Cross multiply
   2,068.16x = 2,853.77 × 1,217.05
4. Step 4: Simplify right side
   2,068.16x = 3,473,167.56
5. Step 5: Solve for x
   x = 3,473,167.56/2,068.16
6. Step 6: Final answer
   x = 1,679.36