Finding the Fourth Proportional to 1,443,142.84, 2,164,728.78 and 644,464.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443,142.84 : 2,164,728.78 = 644,464.84 : x
2. Step 2: Convert to fraction form
   1,443,142.84/2,164,728.78 = 644,464.84/x
3. Step 3: Cross multiply
   1,443,142.84x = 2,164,728.78 × 644,464.84
4. Step 4: Simplify right side
   1,443,142.84x = 1,395,091,586,846.10
5. Step 5: Solve for x
   x = 1,395,091,586,846.10/1,443,142.84
6. Step 6: Final answer
   x = 966,703.74