Finding the Fourth Proportional to 2,911.85, 4,368.69 and 965.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,911.85 : 4,368.69 = 965.42 : x
2. Step 2: Convert to fraction form
   2,911.85/4,368.69 = 965.42/x
3. Step 3: Cross multiply
   2,911.85x = 4,368.69 × 965.42
4. Step 4: Simplify right side
   2,911.85x = 4,217,598.86
5. Step 5: Solve for x
   x = 4,217,598.86/2,911.85
6. Step 6: Final answer
   x = 1,448.43