Finding the Fourth Proportional to 2,379.40, 3,570.12 and 993.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,379.40 : 3,570.12 = 993.04 : x
2. Step 2: Convert to fraction form
   2,379.40/3,570.12 = 993.04/x
3. Step 3: Cross multiply
   2,379.40x = 3,570.12 × 993.04
4. Step 4: Simplify right side
   2,379.40x = 3,545,280.33
5. Step 5: Solve for x
   x = 3,545,280.33/2,379.40
6. Step 6: Final answer
   x = 1,489.99