Finding the Fourth Proportional to 1,685.98, 2,325.45 and 1,371.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,685.98 : 2,325.45 = 1,371.25 : x
2. Step 2: Convert to fraction form
   1,685.98/2,325.45 = 1,371.25/x
3. Step 3: Cross multiply
   1,685.98x = 2,325.45 × 1,371.25
4. Step 4: Simplify right side
   1,685.98x = 3,188,773.31
5. Step 5: Solve for x
   x = 3,188,773.31/1,685.98
6. Step 6: Final answer
   x = 1,891.35