Finding the Fourth Proportional to 3,916.44, 5,404.71 and 2,148.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,916.44 : 5,404.71 = 2,148.05 : x
2. Step 2: Convert to fraction form
   3,916.44/5,404.71 = 2,148.05/x
3. Step 3: Cross multiply
   3,916.44x = 5,404.71 × 2,148.05
4. Step 4: Simplify right side
   3,916.44x = 11,609,587.32
5. Step 5: Solve for x
   x = 11,609,587.32/3,916.44
6. Step 6: Final answer
   x = 2,964.32