Finding the Fourth Proportional to 1,601.37, 2,209.50 and 971.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,601.37 : 2,209.50 = 971.89 : x
2. Step 2: Convert to fraction form
   1,601.37/2,209.50 = 971.89/x
3. Step 3: Cross multiply
   1,601.37x = 2,209.50 × 971.89
4. Step 4: Simplify right side
   1,601.37x = 2,147,385.43
5. Step 5: Solve for x
   x = 2,147,385.43/1,601.37
6. Step 6: Final answer
   x = 1,340.97