Finding the Fourth Proportional to 1,385.38, 1,911.86 and 755.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.38 : 1,911.86 = 755.94 : x
2. Step 2: Convert to fraction form
   1,385.38/1,911.86 = 755.94/x
3. Step 3: Cross multiply
   1,385.38x = 1,911.86 × 755.94
4. Step 4: Simplify right side
   1,385.38x = 1,445,248.79
5. Step 5: Solve for x
   x = 1,445,248.79/1,385.38
6. Step 6: Final answer
   x = 1,043.21