Finding the Fourth Proportional to 1,384.29, 1,910.27 and 770.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.29 : 1,910.27 = 770.36 : x
2. Step 2: Convert to fraction form
   1,384.29/1,910.27 = 770.36/x
3. Step 3: Cross multiply
   1,384.29x = 1,910.27 × 770.36
4. Step 4: Simplify right side
   1,384.29x = 1,471,582.19
5. Step 5: Solve for x
   x = 1,471,582.19/1,384.29
6. Step 6: Final answer
   x = 1,063.06