Finding the Fourth Proportional to 2,616.21, 3,925.35 and 1,384.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,616.21 : 3,925.35 = 1,384.47 : x
2. Step 2: Convert to fraction form
   2,616.21/3,925.35 = 1,384.47/x
3. Step 3: Cross multiply
   2,616.21x = 3,925.35 × 1,384.47
4. Step 4: Simplify right side
   2,616.21x = 5,434,529.31
5. Step 5: Solve for x
   x = 5,434,529.31/2,616.21
6. Step 6: Final answer
   x = 2,077.25