Finding the Fourth Proportional to 1,807.16, 2,710.43 and 711.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,807.16 : 2,710.43 = 711.83 : x
2. Step 2: Convert to fraction form
   1,807.16/2,710.43 = 711.83/x
3. Step 3: Cross multiply
   1,807.16x = 2,710.43 × 711.83
4. Step 4: Simplify right side
   1,807.16x = 1,929,361.83
5. Step 5: Solve for x
   x = 1,929,361.83/1,807.16
6. Step 6: Final answer
   x = 1,067.62