Finding the Fourth Proportional to 1,571.31, 2,168.34 and 942.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,571.31 : 2,168.34 = 942.19 : x
2. Step 2: Convert to fraction form
   1,571.31/2,168.34 = 942.19/x
3. Step 3: Cross multiply
   1,571.31x = 2,168.34 × 942.19
4. Step 4: Simplify right side
   1,571.31x = 2,042,988.26
5. Step 5: Solve for x
   x = 2,042,988.26/1,571.31
6. Step 6: Final answer
   x = 1,300.18