Finding the Fourth Proportional to 1,342.24, 1,852.48 and 782.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.24 : 1,852.48 = 782.89 : x
2. Step 2: Convert to fraction form
   1,342.24/1,852.48 = 782.89/x
3. Step 3: Cross multiply
   1,342.24x = 1,852.48 × 782.89
4. Step 4: Simplify right side
   1,342.24x = 1,450,288.07
5. Step 5: Solve for x
   x = 1,450,288.07/1,342.24
6. Step 6: Final answer
   x = 1,080.50