Finding the Fourth Proportional to 1,893.78, 2,838.71 and 1,372.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,893.78 : 2,838.71 = 1,372.49 : x
2. Step 2: Convert to fraction form
   1,893.78/2,838.71 = 1,372.49/x
3. Step 3: Cross multiply
   1,893.78x = 2,838.71 × 1,372.49
4. Step 4: Simplify right side
   1,893.78x = 3,896,080.03
5. Step 5: Solve for x
   x = 3,896,080.03/1,893.78
6. Step 6: Final answer
   x = 2,057.30