Finding the Fourth Proportional to 1,664.34, 2,296.90 and 918.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,664.34 : 2,296.90 = 918.37 : x
2. Step 2: Convert to fraction form
   1,664.34/2,296.90 = 918.37/x
3. Step 3: Cross multiply
   1,664.34x = 2,296.90 × 918.37
4. Step 4: Simplify right side
   1,664.34x = 2,109,404.05
5. Step 5: Solve for x
   x = 2,109,404.05/1,664.34
6. Step 6: Final answer
   x = 1,267.41