Finding the Fourth Proportional to 1,850.48, 2,553.72 and 1,064.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,850.48 : 2,553.72 = 1,064.78 : x
2. Step 2: Convert to fraction form
   1,850.48/2,553.72 = 1,064.78/x
3. Step 3: Cross multiply
   1,850.48x = 2,553.72 × 1,064.78
4. Step 4: Simplify right side
   1,850.48x = 2,719,149.98
5. Step 5: Solve for x
   x = 2,719,149.98/1,850.48
6. Step 6: Final answer
   x = 1,469.43