Finding the Fourth Proportional to 1,385.08, 1,911.41 and 755.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.08 : 1,911.41 = 755.61 : x
2. Step 2: Convert to fraction form
   1,385.08/1,911.41 = 755.61/x
3. Step 3: Cross multiply
   1,385.08x = 1,911.41 × 755.61
4. Step 4: Simplify right side
   1,385.08x = 1,444,287.40
5. Step 5: Solve for x
   x = 1,444,287.40/1,385.08
6. Step 6: Final answer
   x = 1,042.74