Finding the Fourth Proportional to 1,353.24, 1,866.51 and 1,145.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.24 : 1,866.51 = 1,145.34 : x
2. Step 2: Convert to fraction form
   1,353.24/1,866.51 = 1,145.34/x
3. Step 3: Cross multiply
   1,353.24x = 1,866.51 × 1,145.34
4. Step 4: Simplify right side
   1,353.24x = 2,137,788.56
5. Step 5: Solve for x
   x = 2,137,788.56/1,353.24
6. Step 6: Final answer
   x = 1,579.76