Finding the Fourth Proportional to 1,608.49, 2,219.52 and 900.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,608.49 : 2,219.52 = 900.37 : x
2. Step 2: Convert to fraction form
   1,608.49/2,219.52 = 900.37/x
3. Step 3: Cross multiply
   1,608.49x = 2,219.52 × 900.37
4. Step 4: Simplify right side
   1,608.49x = 1,998,383.67
5. Step 5: Solve for x
   x = 1,998,383.67/1,608.49
6. Step 6: Final answer
   x = 1,242.40