Finding the Fourth Proportional to 2,550.29, 3,820.53 and 1,964.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,550.29 : 3,820.53 = 1,964.40 : x
2. Step 2: Convert to fraction form
   2,550.29/3,820.53 = 1,964.40/x
3. Step 3: Cross multiply
   2,550.29x = 3,820.53 × 1,964.40
4. Step 4: Simplify right side
   2,550.29x = 7,505,042.17
5. Step 5: Solve for x
   x = 7,505,042.17/2,550.29
6. Step 6: Final answer
   x = 2,942.82