Finding the Fourth Proportional to 3,405.12, 5,106.24 and 1,064.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,405.12 : 5,106.24 = 1,064.50 : x
2. Step 2: Convert to fraction form
   3,405.12/5,106.24 = 1,064.50/x
3. Step 3: Cross multiply
   3,405.12x = 5,106.24 × 1,064.50
4. Step 4: Simplify right side
   3,405.12x = 5,435,574.38
5. Step 5: Solve for x
   x = 5,435,574.38/3,405.12
6. Step 6: Final answer
   x = 1,596.29