Finding the Fourth Proportional to 3,561.72, 5,342.86 and 964.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,561.72 : 5,342.86 = 964.62 : x
2. Step 2: Convert to fraction form
   3,561.72/5,342.86 = 964.62/x
3. Step 3: Cross multiply
   3,561.72x = 5,342.86 × 964.62
4. Step 4: Simplify right side
   3,561.72x = 5,153,829.61
5. Step 5: Solve for x
   x = 5,153,829.61/3,561.72
6. Step 6: Final answer
   x = 1,447.01