Finding the Fourth Proportional to 3,486.30, 5,227.83 and 1,020.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,486.30 : 5,227.83 = 1,020.53 : x
2. Step 2: Convert to fraction form
   3,486.30/5,227.83 = 1,020.53/x
3. Step 3: Cross multiply
   3,486.30x = 5,227.83 × 1,020.53
4. Step 4: Simplify right side
   3,486.30x = 5,335,131.21
5. Step 5: Solve for x
   x = 5,335,131.21/3,486.30
6. Step 6: Final answer
   x = 1,530.31