Finding the Fourth Proportional to 1,485.48, 2,227.52 and 869.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,485.48 : 2,227.52 = 869.32 : x
2. Step 2: Convert to fraction form
   1,485.48/2,227.52 = 869.32/x
3. Step 3: Cross multiply
   1,485.48x = 2,227.52 × 869.32
4. Step 4: Simplify right side
   1,485.48x = 1,936,427.69
5. Step 5: Solve for x
   x = 1,936,427.69/1,485.48
6. Step 6: Final answer
   x = 1,303.57