Finding the Fourth Proportional to 2,225.67, 3,338.50 and 928.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,225.67 : 3,338.50 = 928.05 : x
2. Step 2: Convert to fraction form
   2,225.67/3,338.50 = 928.05/x
3. Step 3: Cross multiply
   2,225.67x = 3,338.50 × 928.05
4. Step 4: Simplify right side
   2,225.67x = 3,098,294.93
5. Step 5: Solve for x
   x = 3,098,294.93/2,225.67
6. Step 6: Final answer
   x = 1,392.07