Finding the Fourth Proportional to 3,561.69, 5,342.47 and 964.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,561.69 : 5,342.47 = 964.63 : x
2. Step 2: Convert to fraction form
   3,561.69/5,342.47 = 964.63/x
3. Step 3: Cross multiply
   3,561.69x = 5,342.47 × 964.63
4. Step 4: Simplify right side
   3,561.69x = 5,153,491.07
5. Step 5: Solve for x
   x = 5,153,491.07/3,561.69
6. Step 6: Final answer
   x = 1,446.92