Finding the Fourth Proportional to 1,685.05, 2,526.49 and 710.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,685.05 : 2,526.49 = 710.89 : x
2. Step 2: Convert to fraction form
   1,685.05/2,526.49 = 710.89/x
3. Step 3: Cross multiply
   1,685.05x = 2,526.49 × 710.89
4. Step 4: Simplify right side
   1,685.05x = 1,796,056.48
5. Step 5: Solve for x
   x = 1,796,056.48/1,685.05
6. Step 6: Final answer
   x = 1,065.88