Finding the Fourth Proportional to 1,358.32, 1,874.54 and 768.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,358.32 : 1,874.54 = 768.86 : x
2. Step 2: Convert to fraction form
   1,358.32/1,874.54 = 768.86/x
3. Step 3: Cross multiply
   1,358.32x = 1,874.54 × 768.86
4. Step 4: Simplify right side
   1,358.32x = 1,441,254.98
5. Step 5: Solve for x
   x = 1,441,254.98/1,358.32
6. Step 6: Final answer
   x = 1,061.06