Finding the Fourth Proportional to 1,942.38, 2,912.58 and 709.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,942.38 : 2,912.58 = 709.47 : x
2. Step 2: Convert to fraction form
   1,942.38/2,912.58 = 709.47/x
3. Step 3: Cross multiply
   1,942.38x = 2,912.58 × 709.47
4. Step 4: Simplify right side
   1,942.38x = 2,066,388.13
5. Step 5: Solve for x
   x = 2,066,388.13/1,942.38
6. Step 6: Final answer
   x = 1,063.84