Finding the Fourth Proportional to 2,225.34, 3,336.69 and 992.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,225.34 : 3,336.69 = 992.10 : x
2. Step 2: Convert to fraction form
   2,225.34/3,336.69 = 992.10/x
3. Step 3: Cross multiply
   2,225.34x = 3,336.69 × 992.10
4. Step 4: Simplify right side
   2,225.34x = 3,310,330.15
5. Step 5: Solve for x
   x = 3,310,330.15/2,225.34
6. Step 6: Final answer
   x = 1,487.56