Finding the Fourth Proportional to 1,851.12, 2,553.84 and 1,327.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,851.12 : 2,553.84 = 1,327.68 : x
2. Step 2: Convert to fraction form
   1,851.12/2,553.84 = 1,327.68/x
3. Step 3: Cross multiply
   1,851.12x = 2,553.84 × 1,327.68
4. Step 4: Simplify right side
   1,851.12x = 3,390,682.29
5. Step 5: Solve for x
   x = 3,390,682.29/1,851.12
6. Step 6: Final answer
   x = 1,831.69