Finding the Fourth Proportional to 1,563.52, 2,157.82 and 900.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,563.52 : 2,157.82 = 900.52 : x
2. Step 2: Convert to fraction form
   1,563.52/2,157.82 = 900.52/x
3. Step 3: Cross multiply
   1,563.52x = 2,157.82 × 900.52
4. Step 4: Simplify right side
   1,563.52x = 1,943,160.07
5. Step 5: Solve for x
   x = 1,943,160.07/1,563.52
6. Step 6: Final answer
   x = 1,242.81