Finding the Fourth Proportional to 1,808.72, 2,496.48 and 1,023.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,808.72 : 2,496.48 = 1,023.20 : x
2. Step 2: Convert to fraction form
   1,808.72/2,496.48 = 1,023.20/x
3. Step 3: Cross multiply
   1,808.72x = 2,496.48 × 1,023.20
4. Step 4: Simplify right side
   1,808.72x = 2,554,398.34
5. Step 5: Solve for x
   x = 2,554,398.34/1,808.72
6. Step 6: Final answer
   x = 1,412.27