Finding the Fourth Proportional to 1,685.59, 2,325.67 and 939.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,685.59 : 2,325.67 = 939.38 : x
2. Step 2: Convert to fraction form
   1,685.59/2,325.67 = 939.38/x
3. Step 3: Cross multiply
   1,685.59x = 2,325.67 × 939.38
4. Step 4: Simplify right side
   1,685.59x = 2,184,673.91
5. Step 5: Solve for x
   x = 2,184,673.91/1,685.59
6. Step 6: Final answer
   x = 1,296.09