Finding the Fourth Proportional to 1,294.82, 1,787.01 and 770.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,294.82 : 1,787.01 = 770.84 : x
2. Step 2: Convert to fraction form
   1,294.82/1,787.01 = 770.84/x
3. Step 3: Cross multiply
   1,294.82x = 1,787.01 × 770.84
4. Step 4: Simplify right side
   1,294.82x = 1,377,498.79
5. Step 5: Solve for x
   x = 1,377,498.79/1,294.82
6. Step 6: Final answer
   x = 1,063.85