Finding the Fourth Proportional to 1,371.90, 1,893.27 and 782.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,371.90 : 1,893.27 = 782.34 : x
2. Step 2: Convert to fraction form
   1,371.90/1,893.27 = 782.34/x
3. Step 3: Cross multiply
   1,371.90x = 1,893.27 × 782.34
4. Step 4: Simplify right side
   1,371.90x = 1,481,180.85
5. Step 5: Solve for x
   x = 1,481,180.85/1,371.90
6. Step 6: Final answer
   x = 1,079.66