Finding the Fourth Proportional to 964.82, 1,322.78 and 947.32

Step by Step Solution

1. Step 1: Write the proportion equation
   964.82 : 1,322.78 = 947.32 : x
2. Step 2: Convert to fraction form
   964.82/1,322.78 = 947.32/x
3. Step 3: Cross multiply
   964.82x = 1,322.78 × 947.32
4. Step 4: Simplify right side
   964.82x = 1,253,095.95
5. Step 5: Solve for x
   x = 1,253,095.95/964.82
6. Step 6: Final answer
   x = 1,298.79