Finding the Fourth Proportional to 1,685.10, 2,325.39 and 1,063.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,685.10 : 2,325.39 = 1,063.50 : x
2. Step 2: Convert to fraction form
   1,685.10/2,325.39 = 1,063.50/x
3. Step 3: Cross multiply
   1,685.10x = 2,325.39 × 1,063.50
4. Step 4: Simplify right side
   1,685.10x = 2,473,052.27
5. Step 5: Solve for x
   x = 2,473,052.27/1,685.10
6. Step 6: Final answer
   x = 1,467.60