Finding the Fourth Proportional to 2,870.87, 4,304.48 and 1,020.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.87 : 4,304.48 = 1,020.13 : x
2. Step 2: Convert to fraction form
   2,870.87/4,304.48 = 1,020.13/x
3. Step 3: Cross multiply
   2,870.87x = 4,304.48 × 1,020.13
4. Step 4: Simplify right side
   2,870.87x = 4,391,113.32
5. Step 5: Solve for x
   x = 4,391,113.32/2,870.87
6. Step 6: Final answer
   x = 1,529.54