Finding the Fourth Proportional to 1,856.38, 2,561.07 and 1,227.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,856.38 : 2,561.07 = 1,227.25 : x
2. Step 2: Convert to fraction form
   1,856.38/2,561.07 = 1,227.25/x
3. Step 3: Cross multiply
   1,856.38x = 2,561.07 × 1,227.25
4. Step 4: Simplify right side
   1,856.38x = 3,143,073.16
5. Step 5: Solve for x
   x = 3,143,073.16/1,856.38
6. Step 6: Final answer
   x = 1,693.12