Finding the Fourth Proportional to 1,433.25, 2,148.12 and 1,020.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.25 : 2,148.12 = 1,020.15 : x
2. Step 2: Convert to fraction form
   1,433.25/2,148.12 = 1,020.15/x
3. Step 3: Cross multiply
   1,433.25x = 2,148.12 × 1,020.15
4. Step 4: Simplify right side
   1,433.25x = 2,191,404.62
5. Step 5: Solve for x
   x = 2,191,404.62/1,433.25
6. Step 6: Final answer
   x = 1,528.98