Finding the Fourth Proportional to 1,346.72, 2,019.69 and 955.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,346.72 : 2,019.69 = 955.55 : x
2. Step 2: Convert to fraction form
   1,346.72/2,019.69 = 955.55/x
3. Step 3: Cross multiply
   1,346.72x = 2,019.69 × 955.55
4. Step 4: Simplify right side
   1,346.72x = 1,929,919.83
5. Step 5: Solve for x
   x = 1,929,919.83/1,346.72
6. Step 6: Final answer
   x = 1,433.06