Finding the Fourth Proportional to 1,685.17, 2,523.83 and 1,626.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,685.17 : 2,523.83 = 1,626.78 : x
2. Step 2: Convert to fraction form
   1,685.17/2,523.83 = 1,626.78/x
3. Step 3: Cross multiply
   1,685.17x = 2,523.83 × 1,626.78
4. Step 4: Simplify right side
   1,685.17x = 4,105,716.17
5. Step 5: Solve for x
   x = 4,105,716.17/1,685.17
6. Step 6: Final answer
   x = 2,436.38