Finding the Fourth Proportional to 1,685.34, 2,526.59 and 711.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,685.34 : 2,526.59 = 711.32 : x
2. Step 2: Convert to fraction form
   1,685.34/2,526.59 = 711.32/x
3. Step 3: Cross multiply
   1,685.34x = 2,526.59 × 711.32
4. Step 4: Simplify right side
   1,685.34x = 1,797,203.14
5. Step 5: Solve for x
   x = 1,797,203.14/1,685.34
6. Step 6: Final answer
   x = 1,066.37