Finding the Fourth Proportional to 1,647.34, 2,273.29 and 901.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,647.34 : 2,273.29 = 901.28 : x
2. Step 2: Convert to fraction form
   1,647.34/2,273.29 = 901.28/x
3. Step 3: Cross multiply
   1,647.34x = 2,273.29 × 901.28
4. Step 4: Simplify right side
   1,647.34x = 2,048,870.81
5. Step 5: Solve for x
   x = 2,048,870.81/1,647.34
6. Step 6: Final answer
   x = 1,243.74