Finding the Fourth Proportional to 2,870.96, 4,312.20 and 2,509.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.96 : 4,312.20 = 2,509.52 : x
2. Step 2: Convert to fraction form
   2,870.96/4,312.20 = 2,509.52/x
3. Step 3: Cross multiply
   2,870.96x = 4,312.20 × 2,509.52
4. Step 4: Simplify right side
   2,870.96x = 10,821,552.14
5. Step 5: Solve for x
   x = 10,821,552.14/2,870.96
6. Step 6: Final answer
   x = 3,769.31