Finding the Fourth Proportional to 2,068.76, 2,855.33 and 1,272.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,068.76 : 2,855.33 = 1,272.49 : x
2. Step 2: Convert to fraction form
   2,068.76/2,855.33 = 1,272.49/x
3. Step 3: Cross multiply
   2,068.76x = 2,855.33 × 1,272.49
4. Step 4: Simplify right side
   2,068.76x = 3,633,365.37
5. Step 5: Solve for x
   x = 3,633,365.37/2,068.76
6. Step 6: Final answer
   x = 1,756.30