Finding the Fourth Proportional to 1,384.65, 1,910.86 and 755.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.65 : 1,910.86 = 755.23 : x
2. Step 2: Convert to fraction form
   1,384.65/1,910.86 = 755.23/x
3. Step 3: Cross multiply
   1,384.65x = 1,910.86 × 755.23
4. Step 4: Simplify right side
   1,384.65x = 1,443,138.80
5. Step 5: Solve for x
   x = 1,443,138.80/1,384.65
6. Step 6: Final answer
   x = 1,042.24