Finding the Fourth Proportional to 1,384.86, 1,911.11 and 755.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.86 : 1,911.11 = 755.39 : x
2. Step 2: Convert to fraction form
   1,384.86/1,911.11 = 755.39/x
3. Step 3: Cross multiply
   1,384.86x = 1,911.11 × 755.39
4. Step 4: Simplify right side
   1,384.86x = 1,443,629.11
5. Step 5: Solve for x
   x = 1,443,629.11/1,384.86
6. Step 6: Final answer
   x = 1,042.44