Finding the Fourth Proportional to 2,068.44, 2,854.35 and 1,172.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,068.44 : 2,854.35 = 1,172.15 : x
2. Step 2: Convert to fraction form
   2,068.44/2,854.35 = 1,172.15/x
3. Step 3: Cross multiply
   2,068.44x = 2,854.35 × 1,172.15
4. Step 4: Simplify right side
   2,068.44x = 3,345,722.78
5. Step 5: Solve for x
   x = 3,345,722.78/2,068.44
6. Step 6: Final answer
   x = 1,617.51