Finding the Fourth Proportional to 1,342.32, 1,852.72 and 783.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.32 : 1,852.72 = 783.07 : x
2. Step 2: Convert to fraction form
   1,342.32/1,852.72 = 783.07/x
3. Step 3: Cross multiply
   1,342.32x = 1,852.72 × 783.07
4. Step 4: Simplify right side
   1,342.32x = 1,450,807.27
5. Step 5: Solve for x
   x = 1,450,807.27/1,342.32
6. Step 6: Final answer
   x = 1,080.82