Finding the Fourth Proportional to 1,179.37, 1,767.38 and 868.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,179.37 : 1,767.38 = 868.78 : x
2. Step 2: Convert to fraction form
   1,179.37/1,767.38 = 868.78/x
3. Step 3: Cross multiply
   1,179.37x = 1,767.38 × 868.78
4. Step 4: Simplify right side
   1,179.37x = 1,535,455.63
5. Step 5: Solve for x
   x = 1,535,455.63/1,179.37
6. Step 6: Final answer
   x = 1,301.93