Finding the Fourth Proportional to 1,385.30, 1,911.69 and 755.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.30 : 1,911.69 = 755.84 : x
2. Step 2: Convert to fraction form
   1,385.30/1,911.69 = 755.84/x
3. Step 3: Cross multiply
   1,385.30x = 1,911.69 × 755.84
4. Step 4: Simplify right side
   1,385.30x = 1,444,936.55
5. Step 5: Solve for x
   x = 1,444,936.55/1,385.30
6. Step 6: Final answer
   x = 1,043.05