Finding the Fourth Proportional to 1,308.99, 1,964.85 and 962.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.99 : 1,964.85 = 962.72 : x
2. Step 2: Convert to fraction form
   1,308.99/1,964.85 = 962.72/x
3. Step 3: Cross multiply
   1,308.99x = 1,964.85 × 962.72
4. Step 4: Simplify right side
   1,308.99x = 1,891,600.39
5. Step 5: Solve for x
   x = 1,891,600.39/1,308.99
6. Step 6: Final answer
   x = 1,445.08