Finding the Fourth Proportional to 1,571.38, 2,357.67 and 706.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,571.38 : 2,357.67 = 706.30 : x
2. Step 2: Convert to fraction form
   1,571.38/2,357.67 = 706.30/x
3. Step 3: Cross multiply
   1,571.38x = 2,357.67 × 706.30
4. Step 4: Simplify right side
   1,571.38x = 1,665,222.32
5. Step 5: Solve for x
   x = 1,665,222.32/1,571.38
6. Step 6: Final answer
   x = 1,059.72