Finding the Fourth Proportional to 1,664.30, 2,296.56 and 918.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,664.30 : 2,296.56 = 918.22 : x
2. Step 2: Convert to fraction form
   1,664.30/2,296.56 = 918.22/x
3. Step 3: Cross multiply
   1,664.30x = 2,296.56 × 918.22
4. Step 4: Simplify right side
   1,664.30x = 2,108,747.32
5. Step 5: Solve for x
   x = 2,108,747.32/1,664.30
6. Step 6: Final answer
   x = 1,267.05