Finding the Fourth Proportional to 3,561.12, 5,342.28 and 964.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,561.12 : 5,342.28 = 964.32 : x
2. Step 2: Convert to fraction form
   3,561.12/5,342.28 = 964.32/x
3. Step 3: Cross multiply
   3,561.12x = 5,342.28 × 964.32
4. Step 4: Simplify right side
   3,561.12x = 5,151,667.45
5. Step 5: Solve for x
   x = 5,151,667.45/3,561.12
6. Step 6: Final answer
   x = 1,446.64