Finding the Fourth Proportional to 1,563.71, 2,157.98 and 900.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,563.71 : 2,157.98 = 900.59 : x
2. Step 2: Convert to fraction form
   1,563.71/2,157.98 = 900.59/x
3. Step 3: Cross multiply
   1,563.71x = 2,157.98 × 900.59
4. Step 4: Simplify right side
   1,563.71x = 1,943,439.92
5. Step 5: Solve for x
   x = 1,943,439.92/1,563.71
6. Step 6: Final answer
   x = 1,242.84