Finding the Fourth Proportional to 3,915.31, 5,873.01 and 993.54

Step by Step Solution

1. Step 1: Write the proportion equation
   3,915.31 : 5,873.01 = 993.54 : x
2. Step 2: Convert to fraction form
   3,915.31/5,873.01 = 993.54/x
3. Step 3: Cross multiply
   3,915.31x = 5,873.01 × 993.54
4. Step 4: Simplify right side
   3,915.31x = 5,835,070.36
5. Step 5: Solve for x
   x = 5,835,070.36/3,915.31
6. Step 6: Final answer
   x = 1,490.32