Finding the Fourth Proportional to 1,404.98, 2,107.56 and 711.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.98 : 2,107.56 = 711.16 : x
2. Step 2: Convert to fraction form
   1,404.98/2,107.56 = 711.16/x
3. Step 3: Cross multiply
   1,404.98x = 2,107.56 × 711.16
4. Step 4: Simplify right side
   1,404.98x = 1,498,812.37
5. Step 5: Solve for x
   x = 1,498,812.37/1,404.98
6. Step 6: Final answer
   x = 1,066.79