Finding the Fourth Proportional to 2,619.45, 3,925.60 and 1,447.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,619.45 : 3,925.60 = 1,447.72 : x
2. Step 2: Convert to fraction form
   2,619.45/3,925.60 = 1,447.72/x
3. Step 3: Cross multiply
   2,619.45x = 3,925.60 × 1,447.72
4. Step 4: Simplify right side
   2,619.45x = 5,683,169.63
5. Step 5: Solve for x
   x = 5,683,169.63/2,619.45
6. Step 6: Final answer
   x = 2,169.60