Finding the Fourth Proportional to 2,225.91, 3,339.42 and 993.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,225.91 : 3,339.42 = 993.42 : x
2. Step 2: Convert to fraction form
   2,225.91/3,339.42 = 993.42/x
3. Step 3: Cross multiply
   2,225.91x = 3,339.42 × 993.42
4. Step 4: Simplify right side
   2,225.91x = 3,317,446.62
5. Step 5: Solve for x
   x = 3,317,446.62/2,225.91
6. Step 6: Final answer
   x = 1,490.38