Finding the Fourth Proportional to 2,651.76, 3,967.06 and 2,290.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,651.76 : 3,967.06 = 2,290.48 : x
2. Step 2: Convert to fraction form
   2,651.76/3,967.06 = 2,290.48/x
3. Step 3: Cross multiply
   2,651.76x = 3,967.06 × 2,290.48
4. Step 4: Simplify right side
   2,651.76x = 9,086,471.59
5. Step 5: Solve for x
   x = 9,086,471.59/2,651.76
6. Step 6: Final answer
   x = 3,426.58