Finding the Fourth Proportional to 1,553.73, 2,145.06 and 964.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,553.73 : 2,145.06 = 964.59 : x
2. Step 2: Convert to fraction form
   1,553.73/2,145.06 = 964.59/x
3. Step 3: Cross multiply
   1,553.73x = 2,145.06 × 964.59
4. Step 4: Simplify right side
   1,553.73x = 2,069,103.43
5. Step 5: Solve for x
   x = 2,069,103.43/1,553.73
6. Step 6: Final answer
   x = 1,331.70