Finding the Fourth Proportional to 1,371.94, 1,893.16 and 782.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,371.94 : 1,893.16 = 782.37 : x
2. Step 2: Convert to fraction form
   1,371.94/1,893.16 = 782.37/x
3. Step 3: Cross multiply
   1,371.94x = 1,893.16 × 782.37
4. Step 4: Simplify right side
   1,371.94x = 1,481,151.59
5. Step 5: Solve for x
   x = 1,481,151.59/1,371.94
6. Step 6: Final answer
   x = 1,079.60