Finding the Fourth Proportional to 1,553.89, 2,144.23 and 964.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,553.89 : 2,144.23 = 964.45 : x
2. Step 2: Convert to fraction form
   1,553.89/2,144.23 = 964.45/x
3. Step 3: Cross multiply
   1,553.89x = 2,144.23 × 964.45
4. Step 4: Simplify right side
   1,553.89x = 2,068,002.62
5. Step 5: Solve for x
   x = 2,068,002.62/1,553.89
6. Step 6: Final answer
   x = 1,330.86