Finding the Fourth Proportional to 1,626.39, 2,243.86 and 918.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,626.39 : 2,243.86 = 918.15 : x
2. Step 2: Convert to fraction form
   1,626.39/2,243.86 = 918.15/x
3. Step 3: Cross multiply
   1,626.39x = 2,243.86 × 918.15
4. Step 4: Simplify right side
   1,626.39x = 2,060,186.54
5. Step 5: Solve for x
   x = 2,060,186.54/1,626.39
6. Step 6: Final answer
   x = 1,266.72