Finding the Fourth Proportional to 2,276.76, 3,411.90 and 1,661.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,276.76 : 3,411.90 = 1,661.88 : x
2. Step 2: Convert to fraction form
   2,276.76/3,411.90 = 1,661.88/x
3. Step 3: Cross multiply
   2,276.76x = 3,411.90 × 1,661.88
4. Step 4: Simplify right side
   2,276.76x = 5,670,168.37
5. Step 5: Solve for x
   x = 5,670,168.37/2,276.76
6. Step 6: Final answer
   x = 2,490.46