Finding the Fourth Proportional to 1,664.38, 2,296.72 and 918.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,664.38 : 2,296.72 = 918.34 : x
2. Step 2: Convert to fraction form
   1,664.38/2,296.72 = 918.34/x
3. Step 3: Cross multiply
   1,664.38x = 2,296.72 × 918.34
4. Step 4: Simplify right side
   1,664.38x = 2,109,165.25
5. Step 5: Solve for x
   x = 2,109,165.25/1,664.38
6. Step 6: Final answer
   x = 1,267.24