Finding the Fourth Proportional to 1,647.69, 2,273.89 and 901.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,647.69 : 2,273.89 = 901.70 : x
2. Step 2: Convert to fraction form
   1,647.69/2,273.89 = 901.70/x
3. Step 3: Cross multiply
   1,647.69x = 2,273.89 × 901.70
4. Step 4: Simplify right side
   1,647.69x = 2,050,366.61
5. Step 5: Solve for x
   x = 2,050,366.61/1,647.69
6. Step 6: Final answer
   x = 1,244.39