Finding the Fourth Proportional to 1,685.37, 2,325.71 and 939.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,685.37 : 2,325.71 = 939.32 : x
2. Step 2: Convert to fraction form
   1,685.37/2,325.71 = 939.32/x
3. Step 3: Cross multiply
   1,685.37x = 2,325.71 × 939.32
4. Step 4: Simplify right side
   1,685.37x = 2,184,569.59
5. Step 5: Solve for x
   x = 2,184,569.59/1,685.37
6. Step 6: Final answer
   x = 1,296.20