Finding the Fourth Proportional to 1,342.12, 1,851.96 and 782.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.12 : 1,851.96 = 782.46 : x
2. Step 2: Convert to fraction form
   1,342.12/1,851.96 = 782.46/x
3. Step 3: Cross multiply
   1,342.12x = 1,851.96 × 782.46
4. Step 4: Simplify right side
   1,342.12x = 1,449,087.56
5. Step 5: Solve for x
   x = 1,449,087.56/1,342.12
6. Step 6: Final answer
   x = 1,079.70