Finding the Fourth Proportional to 2,861.39, 3,947.31 and 1,798.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,861.39 : 3,947.31 = 1,798.62 : x
2. Step 2: Convert to fraction form
   2,861.39/3,947.31 = 1,798.62/x
3. Step 3: Cross multiply
   2,861.39x = 3,947.31 × 1,798.62
4. Step 4: Simplify right side
   2,861.39x = 7,099,710.71
5. Step 5: Solve for x
   x = 7,099,710.71/2,861.39
6. Step 6: Final answer
   x = 2,481.21