Finding the Fourth Proportional to 2,186.30, 3,280.52 and 1,090.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,186.30 : 3,280.52 = 1,090.83 : x
2. Step 2: Convert to fraction form
   2,186.30/3,280.52 = 1,090.83/x
3. Step 3: Cross multiply
   2,186.30x = 3,280.52 × 1,090.83
4. Step 4: Simplify right side
   2,186.30x = 3,578,489.63
5. Step 5: Solve for x
   x = 3,578,489.63/2,186.30
6. Step 6: Final answer
   x = 1,636.78