Finding the Fourth Proportional to 1,940.82, 2,909.22 and 770.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,940.82 : 2,909.22 = 770.34 : x
2. Step 2: Convert to fraction form
   1,940.82/2,909.22 = 770.34/x
3. Step 3: Cross multiply
   1,940.82x = 2,909.22 × 770.34
4. Step 4: Simplify right side
   1,940.82x = 2,241,088.53
5. Step 5: Solve for x
   x = 2,241,088.53/1,940.82
6. Step 6: Final answer
   x = 1,154.71