Finding the Fourth Proportional to 1,601.90, 2,210.33 and 938.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,601.90 : 2,210.33 = 938.73 : x
2. Step 2: Convert to fraction form
   1,601.90/2,210.33 = 938.73/x
3. Step 3: Cross multiply
   1,601.90x = 2,210.33 × 938.73
4. Step 4: Simplify right side
   1,601.90x = 2,074,898.39
5. Step 5: Solve for x
   x = 2,074,898.39/1,601.90
6. Step 6: Final answer
   x = 1,295.28