Finding the Fourth Proportional to 1,385.04, 1,911.39 and 755.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.04 : 1,911.39 = 755.61 : x
2. Step 2: Convert to fraction form
   1,385.04/1,911.39 = 755.61/x
3. Step 3: Cross multiply
   1,385.04x = 1,911.39 × 755.61
4. Step 4: Simplify right side
   1,385.04x = 1,444,265.40
5. Step 5: Solve for x
   x = 1,444,265.40/1,385.04
6. Step 6: Final answer
   x = 1,042.76