Finding the Fourth Proportional to 1,307.82, 1,799.37 and 1,142.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,307.82 : 1,799.37 = 1,142.43 : x
2. Step 2: Convert to fraction form
   1,307.82/1,799.37 = 1,142.43/x
3. Step 3: Cross multiply
   1,307.82x = 1,799.37 × 1,142.43
4. Step 4: Simplify right side
   1,307.82x = 2,055,654.27
5. Step 5: Solve for x
   x = 2,055,654.27/1,307.82
6. Step 6: Final answer
   x = 1,571.82