Finding the Fourth Proportional to 1,857.71, 2,562.71 and 1,227.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,857.71 : 2,562.71 = 1,227.57 : x
2. Step 2: Convert to fraction form
   1,857.71/2,562.71 = 1,227.57/x
3. Step 3: Cross multiply
   1,857.71x = 2,562.71 × 1,227.57
4. Step 4: Simplify right side
   1,857.71x = 3,145,899.78
5. Step 5: Solve for x
   x = 3,145,899.78/1,857.71
6. Step 6: Final answer
   x = 1,693.43