Finding the Fourth Proportional to 1,664.39, 2,296.82 and 918.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,664.39 : 2,296.82 = 918.30 : x
2. Step 2: Convert to fraction form
   1,664.39/2,296.82 = 918.30/x
3. Step 3: Cross multiply
   1,664.39x = 2,296.82 × 918.30
4. Step 4: Simplify right side
   1,664.39x = 2,109,167.15
5. Step 5: Solve for x
   x = 2,109,167.15/1,664.39
6. Step 6: Final answer
   x = 1,267.23