Finding the Fourth Proportional to 1,643.25, 2,267.69 and 897.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,643.25 : 2,267.69 = 897.22 : x
2. Step 2: Convert to fraction form
   1,643.25/2,267.69 = 897.22/x
3. Step 3: Cross multiply
   1,643.25x = 2,267.69 × 897.22
4. Step 4: Simplify right side
   1,643.25x = 2,034,612.34
5. Step 5: Solve for x
   x = 2,034,612.34/1,643.25
6. Step 6: Final answer
   x = 1,238.17