Finding the Fourth Proportional to 1,385.01, 2,076.53 and 768.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.01 : 2,076.53 = 768.33 : x
2. Step 2: Convert to fraction form
   1,385.01/2,076.53 = 768.33/x
3. Step 3: Cross multiply
   1,385.01x = 2,076.53 × 768.33
4. Step 4: Simplify right side
   1,385.01x = 1,595,456.45
5. Step 5: Solve for x
   x = 1,595,456.45/1,385.01
6. Step 6: Final answer
   x = 1,151.95