Finding the Fourth Proportional to 1,403.34, 1,936.59 and 782.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,403.34 : 1,936.59 = 782.34 : x
2. Step 2: Convert to fraction form
   1,403.34/1,936.59 = 782.34/x
3. Step 3: Cross multiply
   1,403.34x = 1,936.59 × 782.34
4. Step 4: Simplify right side
   1,403.34x = 1,515,071.82
5. Step 5: Solve for x
   x = 1,515,071.82/1,403.34
6. Step 6: Final answer
   x = 1,079.62