Finding the Fourth Proportional to 1,725.48, 2,381.12 and 939.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,725.48 : 2,381.12 = 939.52 : x
2. Step 2: Convert to fraction form
   1,725.48/2,381.12 = 939.52/x
3. Step 3: Cross multiply
   1,725.48x = 2,381.12 × 939.52
4. Step 4: Simplify right side
   1,725.48x = 2,237,109.86
5. Step 5: Solve for x
   x = 2,237,109.86/1,725.48
6. Step 6: Final answer
   x = 1,296.51