Finding the Fourth Proportional to 2,069.02, 3,103.56 and 770.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.02 : 3,103.56 = 770.50 : x
2. Step 2: Convert to fraction form
   2,069.02/3,103.56 = 770.50/x
3. Step 3: Cross multiply
   2,069.02x = 3,103.56 × 770.50
4. Step 4: Simplify right side
   2,069.02x = 2,391,292.98
5. Step 5: Solve for x
   x = 2,391,292.98/2,069.02
6. Step 6: Final answer
   x = 1,155.76