Finding the Fourth Proportional to 1,521.37, 2,284.67 and 939.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521.37 : 2,284.67 = 939.82 : x
2. Step 2: Convert to fraction form
   1,521.37/2,284.67 = 939.82/x
3. Step 3: Cross multiply
   1,521.37x = 2,284.67 × 939.82
4. Step 4: Simplify right side
   1,521.37x = 2,147,178.56
5. Step 5: Solve for x
   x = 2,147,178.56/1,521.37
6. Step 6: Final answer
   x = 1,411.35