Finding the Fourth Proportional to 2,389.56, 3,277.52 and 2,276.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,389.56 : 3,277.52 = 2,276.16 : x
2. Step 2: Convert to fraction form
   2,389.56/3,277.52 = 2,276.16/x
3. Step 3: Cross multiply
   2,389.56x = 3,277.52 × 2,276.16
4. Step 4: Simplify right side
   2,389.56x = 7,460,148.54
5. Step 5: Solve for x
   x = 7,460,148.54/2,389.56
6. Step 6: Final answer
   x = 3,121.98