Finding the Fourth Proportional to 1,647.65, 2,273.69 and 901.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,647.65 : 2,273.69 = 901.61 : x
2. Step 2: Convert to fraction form
   1,647.65/2,273.69 = 901.61/x
3. Step 3: Cross multiply
   1,647.65x = 2,273.69 × 901.61
4. Step 4: Simplify right side
   1,647.65x = 2,049,965.76
5. Step 5: Solve for x
   x = 2,049,965.76/1,647.65
6. Step 6: Final answer
   x = 1,244.18