Finding the Fourth Proportional to 2,181, 3,009.78 and 1,250.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,181 : 3,009.78 = 1,250.12 : x
2. Step 2: Convert to fraction form
   2,181/3,009.78 = 1,250.12/x
3. Step 3: Cross multiply
   2,181x = 3,009.78 × 1,250.12
4. Step 4: Simplify right side
   2,181x = 3,762,586.17
5. Step 5: Solve for x
   x = 3,762,586.17/2,181
6. Step 6: Final answer
   x = 1,725.17