Finding the Fourth Proportional to 1,571.82, 2,357.72 and 401.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,571.82 : 2,357.72 = 401.81 : x
2. Step 2: Convert to fraction form
   1,571.82/2,357.72 = 401.81/x
3. Step 3: Cross multiply
   1,571.82x = 2,357.72 × 401.81
4. Step 4: Simplify right side
   1,571.82x = 947,357.01
5. Step 5: Solve for x
   x = 947,357.01/1,571.82
6. Step 6: Final answer
   x = 602.71