Finding the Fourth Proportional to 2,953.49, 4,433.31 and 1,311.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,953.49 : 4,433.31 = 1,311.19 : x
2. Step 2: Convert to fraction form
   2,953.49/4,433.31 = 1,311.19/x
3. Step 3: Cross multiply
   2,953.49x = 4,433.31 × 1,311.19
4. Step 4: Simplify right side
   2,953.49x = 5,812,900.66
5. Step 5: Solve for x
   x = 5,812,900.66/2,953.49
6. Step 6: Final answer
   x = 1,968.15