Finding the Fourth Proportional to 1,936.62, 2,672.82 and 1,438.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,936.62 : 2,672.82 = 1,438.56 : x
2. Step 2: Convert to fraction form
   1,936.62/2,672.82 = 1,438.56/x
3. Step 3: Cross multiply
   1,936.62x = 2,672.82 × 1,438.56
4. Step 4: Simplify right side
   1,936.62x = 3,845,011.94
5. Step 5: Solve for x
   x = 3,845,011.94/1,936.62
6. Step 6: Final answer
   x = 1,985.42