Finding the Fourth Proportional to 2,186.16, 3,274.32 and 1,697.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,186.16 : 3,274.32 = 1,697.72 : x
2. Step 2: Convert to fraction form
   2,186.16/3,274.32 = 1,697.72/x
3. Step 3: Cross multiply
   2,186.16x = 3,274.32 × 1,697.72
4. Step 4: Simplify right side
   2,186.16x = 5,558,878.55
5. Step 5: Solve for x
   x = 5,558,878.55/2,186.16
6. Step 6: Final answer
   x = 2,542.76