Finding the Fourth Proportional to 2,150.33, 3,223.40 and 918.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.33 : 3,223.40 = 918.05 : x
2. Step 2: Convert to fraction form
   2,150.33/3,223.40 = 918.05/x
3. Step 3: Cross multiply
   2,150.33x = 3,223.40 × 918.05
4. Step 4: Simplify right side
   2,150.33x = 2,959,221.66
5. Step 5: Solve for x
   x = 2,959,221.66/2,150.33
6. Step 6: Final answer
   x = 1,376.17