Finding the Fourth Proportional to 1,571.73, 2,168.91 and 942.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,571.73 : 2,168.91 = 942.12 : x
2. Step 2: Convert to fraction form
   1,571.73/2,168.91 = 942.12/x
3. Step 3: Cross multiply
   1,571.73x = 2,168.91 × 942.12
4. Step 4: Simplify right side
   1,571.73x = 2,043,373.49
5. Step 5: Solve for x
   x = 2,043,373.49/1,571.73
6. Step 6: Final answer
   x = 1,300.08