Finding the Fourth Proportional to 2,945.25, 4,419.69 and 2,642.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,945.25 : 4,419.69 = 2,642.71 : x
2. Step 2: Convert to fraction form
   2,945.25/4,419.69 = 2,642.71/x
3. Step 3: Cross multiply
   2,945.25x = 4,419.69 × 2,642.71
4. Step 4: Simplify right side
   2,945.25x = 11,679,958.96
5. Step 5: Solve for x
   x = 11,679,958.96/2,945.25
6. Step 6: Final answer
   x = 3,965.69