Finding the Fourth Proportional to 1,563.68, 2,157.86 and 900.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,563.68 : 2,157.86 = 900.52 : x
2. Step 2: Convert to fraction form
   1,563.68/2,157.86 = 900.52/x
3. Step 3: Cross multiply
   1,563.68x = 2,157.86 × 900.52
4. Step 4: Simplify right side
   1,563.68x = 1,943,196.09
5. Step 5: Solve for x
   x = 1,943,196.09/1,563.68
6. Step 6: Final answer
   x = 1,242.71