Finding the Fourth Proportional to 3,915.07, 5,872.57 and 993.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,915.07 : 5,872.57 = 993.33 : x
2. Step 2: Convert to fraction form
   3,915.07/5,872.57 = 993.33/x
3. Step 3: Cross multiply
   3,915.07x = 5,872.57 × 993.33
4. Step 4: Simplify right side
   3,915.07x = 5,833,397.47
5. Step 5: Solve for x
   x = 5,833,397.47/3,915.07
6. Step 6: Final answer
   x = 1,489.99