Finding the Fourth Proportional to 3,819.78, 5,732.31 and 1,870.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,819.78 : 5,732.31 = 1,870.92 : x
2. Step 2: Convert to fraction form
   3,819.78/5,732.31 = 1,870.92/x
3. Step 3: Cross multiply
   3,819.78x = 5,732.31 × 1,870.92
4. Step 4: Simplify right side
   3,819.78x = 10,724,693.43
5. Step 5: Solve for x
   x = 10,724,693.43/3,819.78
6. Step 6: Final answer
   x = 2,807.67