Finding the Fourth Proportional to 2,964.78, 4,448.45 and 1,405.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,964.78 : 4,448.45 = 1,405.89 : x
2. Step 2: Convert to fraction form
   2,964.78/4,448.45 = 1,405.89/x
3. Step 3: Cross multiply
   2,964.78x = 4,448.45 × 1,405.89
4. Step 4: Simplify right side
   2,964.78x = 6,254,034.89
5. Step 5: Solve for x
   x = 6,254,034.89/2,964.78
6. Step 6: Final answer
   x = 2,109.44