Finding the Fourth Proportional to 1,713.30, 2,564.55 and 1,227.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,713.30 : 2,564.55 = 1,227.30 : x
2. Step 2: Convert to fraction form
   1,713.30/2,564.55 = 1,227.30/x
3. Step 3: Cross multiply
   1,713.30x = 2,564.55 × 1,227.30
4. Step 4: Simplify right side
   1,713.30x = 3,147,472.22
5. Step 5: Solve for x
   x = 3,147,472.22/1,713.30
6. Step 6: Final answer
   x = 1,837.08