Finding the Fourth Proportional to 2,068.64, 3,103.46 and 770.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,068.64 : 3,103.46 = 770.12 : x
2. Step 2: Convert to fraction form
   2,068.64/3,103.46 = 770.12/x
3. Step 3: Cross multiply
   2,068.64x = 3,103.46 × 770.12
4. Step 4: Simplify right side
   2,068.64x = 2,390,036.62
5. Step 5: Solve for x
   x = 2,390,036.62/2,068.64
6. Step 6: Final answer
   x = 1,155.37