Finding the Fourth Proportional to 2,068.90, 3,103.50 and 770.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,068.90 : 3,103.50 = 770.38 : x
2. Step 2: Convert to fraction form
   2,068.90/3,103.50 = 770.38/x
3. Step 3: Cross multiply
   2,068.90x = 3,103.50 × 770.38
4. Step 4: Simplify right side
   2,068.90x = 2,390,874.33
5. Step 5: Solve for x
   x = 2,390,874.33/2,068.90
6. Step 6: Final answer
   x = 1,155.63