Finding the Fourth Proportional to 2,969.72, 4,455.23 and 889.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,969.72 : 4,455.23 = 889.91 : x
2. Step 2: Convert to fraction form
   2,969.72/4,455.23 = 889.91/x
3. Step 3: Cross multiply
   2,969.72x = 4,455.23 × 889.91
4. Step 4: Simplify right side
   2,969.72x = 3,964,727.00
5. Step 5: Solve for x
   x = 3,964,727.00/2,969.72
6. Step 6: Final answer
   x = 1,335.05