Finding the Fourth Proportional to 1,601.12, 2,210.56 and 1,227.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,601.12 : 2,210.56 = 1,227.42 : x
2. Step 2: Convert to fraction form
   1,601.12/2,210.56 = 1,227.42/x
3. Step 3: Cross multiply
   1,601.12x = 2,210.56 × 1,227.42
4. Step 4: Simplify right side
   1,601.12x = 2,713,285.56
5. Step 5: Solve for x
   x = 2,713,285.56/1,601.12
6. Step 6: Final answer
   x = 1,694.62