Finding the Fourth Proportional to 1,601.34, 2,209.86 and 938.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,601.34 : 2,209.86 = 938.22 : x
2. Step 2: Convert to fraction form
   1,601.34/2,209.86 = 938.22/x
3. Step 3: Cross multiply
   1,601.34x = 2,209.86 × 938.22
4. Step 4: Simplify right side
   1,601.34x = 2,073,334.85
5. Step 5: Solve for x
   x = 2,073,334.85/1,601.34
6. Step 6: Final answer
   x = 1,294.75