Finding the Fourth Proportional to 2,861.31, 3,948.72 and 1,682.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,861.31 : 3,948.72 = 1,682.37 : x
2. Step 2: Convert to fraction form
   2,861.31/3,948.72 = 1,682.37/x
3. Step 3: Cross multiply
   2,861.31x = 3,948.72 × 1,682.37
4. Step 4: Simplify right side
   2,861.31x = 6,643,208.07
5. Step 5: Solve for x
   x = 6,643,208.07/2,861.31
6. Step 6: Final answer
   x = 2,321.74