Finding the Fourth Proportional to 2,870.38, 4,304.04 and 1,021.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.38 : 4,304.04 = 1,021.42 : x
2. Step 2: Convert to fraction form
   2,870.38/4,304.04 = 1,021.42/x
3. Step 3: Cross multiply
   2,870.38x = 4,304.04 × 1,021.42
4. Step 4: Simplify right side
   2,870.38x = 4,396,232.54
5. Step 5: Solve for x
   x = 4,396,232.54/2,870.38
6. Step 6: Final answer
   x = 1,531.59