Finding the Fourth Proportional to 1,851.16, 2,553.88 and 1,064.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,851.16 : 2,553.88 = 1,064.80 : x
2. Step 2: Convert to fraction form
   1,851.16/2,553.88 = 1,064.80/x
3. Step 3: Cross multiply
   1,851.16x = 2,553.88 × 1,064.80
4. Step 4: Simplify right side
   1,851.16x = 2,719,371.42
5. Step 5: Solve for x
   x = 2,719,371.42/1,851.16
6. Step 6: Final answer
   x = 1,469.01