Finding the Fourth Proportional to 1,960.55, 2,705.55 and 1,064.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,960.55 : 2,705.55 = 1,064.31 : x
2. Step 2: Convert to fraction form
   1,960.55/2,705.55 = 1,064.31/x
3. Step 3: Cross multiply
   1,960.55x = 2,705.55 × 1,064.31
4. Step 4: Simplify right side
   1,960.55x = 2,879,532.14
5. Step 5: Solve for x
   x = 2,879,532.14/1,960.55
6. Step 6: Final answer
   x = 1,468.74