Finding the Fourth Proportional to 2,068.89, 3,103.52 and 770.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,068.89 : 3,103.52 = 770.85 : x
2. Step 2: Convert to fraction form
   2,068.89/3,103.52 = 770.85/x
3. Step 3: Cross multiply
   2,068.89x = 3,103.52 × 770.85
4. Step 4: Simplify right side
   2,068.89x = 2,392,344.54
5. Step 5: Solve for x
   x = 2,392,344.54/2,068.89
6. Step 6: Final answer
   x = 1,156.34