Finding the Fourth Proportional to 2,069.16, 3,103.89 and 770.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.16 : 3,103.89 = 770.63 : x
2. Step 2: Convert to fraction form
   2,069.16/3,103.89 = 770.63/x
3. Step 3: Cross multiply
   2,069.16x = 3,103.89 × 770.63
4. Step 4: Simplify right side
   2,069.16x = 2,391,932.34
5. Step 5: Solve for x
   x = 2,391,932.34/2,069.16
6. Step 6: Final answer
   x = 1,155.99