Finding the Fourth Proportional to 2,361.88, 3,539.76 and 1,126.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,361.88 : 3,539.76 = 1,126.72 : x
2. Step 2: Convert to fraction form
   2,361.88/3,539.76 = 1,126.72/x
3. Step 3: Cross multiply
   2,361.88x = 3,539.76 × 1,126.72
4. Step 4: Simplify right side
   2,361.88x = 3,988,318.39
5. Step 5: Solve for x
   x = 3,988,318.39/2,361.88
6. Step 6: Final answer
   x = 1,688.62