Finding the Fourth Proportional to 1,563.33, 2,157.41 and 900.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,563.33 : 2,157.41 = 900.18 : x
2. Step 2: Convert to fraction form
   1,563.33/2,157.41 = 900.18/x
3. Step 3: Cross multiply
   1,563.33x = 2,157.41 × 900.18
4. Step 4: Simplify right side
   1,563.33x = 1,942,052.83
5. Step 5: Solve for x
   x = 1,942,052.83/1,563.33
6. Step 6: Final answer
   x = 1,242.25