Finding the Fourth Proportional to 3,890.48, 5,826.38 and 2,132.87

Step by Step Solution

1. Step 1: Write the proportion equation
   3,890.48 : 5,826.38 = 2,132.87 : x
2. Step 2: Convert to fraction form
   3,890.48/5,826.38 = 2,132.87/x
3. Step 3: Cross multiply
   3,890.48x = 5,826.38 × 2,132.87
4. Step 4: Simplify right side
   3,890.48x = 12,426,871.31
5. Step 5: Solve for x
   x = 12,426,871.31/3,890.48
6. Step 6: Final answer
   x = 3,194.18