Finding the Fourth Proportional to 2,181.02, 3,009.74 and 1,186.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,181.02 : 3,009.74 = 1,186.28 : x
2. Step 2: Convert to fraction form
   2,181.02/3,009.74 = 1,186.28/x
3. Step 3: Cross multiply
   2,181.02x = 3,009.74 × 1,186.28
4. Step 4: Simplify right side
   2,181.02x = 3,570,379.32
5. Step 5: Solve for x
   x = 3,570,379.32/2,181.02
6. Step 6: Final answer
   x = 1,637.02