Finding the Fourth Proportional to 2,616.57, 3,926.88 and 1,384.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,616.57 : 3,926.88 = 1,384.29 : x
2. Step 2: Convert to fraction form
   2,616.57/3,926.88 = 1,384.29/x
3. Step 3: Cross multiply
   2,616.57x = 3,926.88 × 1,384.29
4. Step 4: Simplify right side
   2,616.57x = 5,435,940.72
5. Step 5: Solve for x
   x = 5,435,940.72/2,616.57
6. Step 6: Final answer
   x = 2,077.51