Finding the Fourth Proportional to 2,209.47, 3,314.25 and 649.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,209.47 : 3,314.25 = 649.31 : x
2. Step 2: Convert to fraction form
   2,209.47/3,314.25 = 649.31/x
3. Step 3: Cross multiply
   2,209.47x = 3,314.25 × 649.31
4. Step 4: Simplify right side
   2,209.47x = 2,151,959.10
5. Step 5: Solve for x
   x = 2,151,959.10/2,209.47
6. Step 6: Final answer
   x = 973.97