Finding the Fourth Proportional to 1,563.24, 2,343.24 and 869.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,563.24 : 2,343.24 = 869.72 : x
2. Step 2: Convert to fraction form
   1,563.24/2,343.24 = 869.72/x
3. Step 3: Cross multiply
   1,563.24x = 2,343.24 × 869.72
4. Step 4: Simplify right side
   1,563.24x = 2,037,962.69
5. Step 5: Solve for x
   x = 2,037,962.69/1,563.24
6. Step 6: Final answer
   x = 1,303.68