Finding the Fourth Proportional to 2,224.31, 3,331.61 and 1,126.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,224.31 : 3,331.61 = 1,126.79 : x
2. Step 2: Convert to fraction form
   2,224.31/3,331.61 = 1,126.79/x
3. Step 3: Cross multiply
   2,224.31x = 3,331.61 × 1,126.79
4. Step 4: Simplify right side
   2,224.31x = 3,754,019.20
5. Step 5: Solve for x
   x = 3,754,019.20/2,224.31
6. Step 6: Final answer
   x = 1,687.72