Finding the Fourth Proportional to 1,964.78, 2,710.27 and 1,227.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,964.78 : 2,710.27 = 1,227.50 : x
2. Step 2: Convert to fraction form
   1,964.78/2,710.27 = 1,227.50/x
3. Step 3: Cross multiply
   1,964.78x = 2,710.27 × 1,227.50
4. Step 4: Simplify right side
   1,964.78x = 3,326,856.43
5. Step 5: Solve for x
   x = 3,326,856.43/1,964.78
6. Step 6: Final answer
   x = 1,693.25