Finding the Fourth Proportional to 3,405.72, 5,112.18 and 1,675.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,405.72 : 5,112.18 = 1,675.56 : x
2. Step 2: Convert to fraction form
   3,405.72/5,112.18 = 1,675.56/x
3. Step 3: Cross multiply
   3,405.72x = 5,112.18 × 1,675.56
4. Step 4: Simplify right side
   3,405.72x = 8,565,764.32
5. Step 5: Solve for x
   x = 8,565,764.32/3,405.72
6. Step 6: Final answer
   x = 2,515.11