Finding the Fourth Proportional to 1,358.30, 1,874.41 and 768.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,358.30 : 1,874.41 = 768.82 : x
2. Step 2: Convert to fraction form
   1,358.30/1,874.41 = 768.82/x
3. Step 3: Cross multiply
   1,358.30x = 1,874.41 × 768.82
4. Step 4: Simplify right side
   1,358.30x = 1,441,083.90
5. Step 5: Solve for x
   x = 1,441,083.90/1,358.30
6. Step 6: Final answer
   x = 1,060.95