Finding the Fourth Proportional to 1,452.56, 2,003.48 and 1,311.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,452.56 : 2,003.48 = 1,311.76 : x
2. Step 2: Convert to fraction form
   1,452.56/2,003.48 = 1,311.76/x
3. Step 3: Cross multiply
   1,452.56x = 2,003.48 × 1,311.76
4. Step 4: Simplify right side
   1,452.56x = 2,628,084.92
5. Step 5: Solve for x
   x = 2,628,084.92/1,452.56
6. Step 6: Final answer
   x = 1,809.28