Finding the Fourth Proportional to 1,020.71, 1,529.71 and 370.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,020.71 : 1,529.71 = 370.82 : x
2. Step 2: Convert to fraction form
   1,020.71/1,529.71 = 370.82/x
3. Step 3: Cross multiply
   1,020.71x = 1,529.71 × 370.82
4. Step 4: Simplify right side
   1,020.71x = 567,238.49
5. Step 5: Solve for x
   x = 567,238.49/1,020.71
6. Step 6: Final answer
   x = 555.73