Finding the Fourth Proportional to 1,372.43, 1,893.83 and 782.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.43 : 1,893.83 = 782.82 : x
2. Step 2: Convert to fraction form
   1,372.43/1,893.83 = 782.82/x
3. Step 3: Cross multiply
   1,372.43x = 1,893.83 × 782.82
4. Step 4: Simplify right side
   1,372.43x = 1,482,524.09
5. Step 5: Solve for x
   x = 1,482,524.09/1,372.43
6. Step 6: Final answer
   x = 1,080.22