Finding the Fourth Proportional to 1,571.15, 2,168.24 and 941.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,571.15 : 2,168.24 = 941.78 : x
2. Step 2: Convert to fraction form
   1,571.15/2,168.24 = 941.78/x
3. Step 3: Cross multiply
   1,571.15x = 2,168.24 × 941.78
4. Step 4: Simplify right side
   1,571.15x = 2,042,005.78
5. Step 5: Solve for x
   x = 2,042,005.78/1,571.15
6. Step 6: Final answer
   x = 1,299.69