Finding the Fourth Proportional to 2,881.56, 3,976.50 and 1,687.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,881.56 : 3,976.50 = 1,687.37 : x
2. Step 2: Convert to fraction form
   2,881.56/3,976.50 = 1,687.37/x
3. Step 3: Cross multiply
   2,881.56x = 3,976.50 × 1,687.37
4. Step 4: Simplify right side
   2,881.56x = 6,709,806.92
5. Step 5: Solve for x
   x = 6,709,806.92/2,881.56
6. Step 6: Final answer
   x = 2,328.53