Finding the Fourth Proportional to 2,346.72, 3,239.76 and 1,601.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,346.72 : 3,239.76 = 1,601.78 : x
2. Step 2: Convert to fraction form
   2,346.72/3,239.76 = 1,601.78/x
3. Step 3: Cross multiply
   2,346.72x = 3,239.76 × 1,601.78
4. Step 4: Simplify right side
   2,346.72x = 5,189,382.77
5. Step 5: Solve for x
   x = 5,189,382.77/2,346.72
6. Step 6: Final answer
   x = 2,211.33