Finding the Fourth Proportional to 2,116.72, 3,176.16 and 1,599.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116.72 : 3,176.16 = 1,599.87 : x
2. Step 2: Convert to fraction form
   2,116.72/3,176.16 = 1,599.87/x
3. Step 3: Cross multiply
   2,116.72x = 3,176.16 × 1,599.87
4. Step 4: Simplify right side
   2,116.72x = 5,081,443.10
5. Step 5: Solve for x
   x = 5,081,443.10/2,116.72
6. Step 6: Final answer
   x = 2,400.62