Finding the Fourth Proportional to 1,601.72, 2,212.50 and 1,306.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,601.72 : 2,212.50 = 1,306.48 : x
2. Step 2: Convert to fraction form
   1,601.72/2,212.50 = 1,306.48/x
3. Step 3: Cross multiply
   1,601.72x = 2,212.50 × 1,306.48
4. Step 4: Simplify right side
   1,601.72x = 2,890,587
5. Step 5: Solve for x
   x = 2,890,587/1,601.72
6. Step 6: Final answer
   x = 1,804.68