Finding the Fourth Proportional to 2,186.42, 3,277.98 and 1,091.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,186.42 : 3,277.98 = 1,091.56 : x
2. Step 2: Convert to fraction form
   2,186.42/3,277.98 = 1,091.56/x
3. Step 3: Cross multiply
   2,186.42x = 3,277.98 × 1,091.56
4. Step 4: Simplify right side
   2,186.42x = 3,578,111.85
5. Step 5: Solve for x
   x = 3,578,111.85/2,186.42
6. Step 6: Final answer
   x = 1,636.52