Finding the Fourth Proportional to 2,152.45, 3,226.58 and 920.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,152.45 : 3,226.58 = 920.17 : x
2. Step 2: Convert to fraction form
   2,152.45/3,226.58 = 920.17/x
3. Step 3: Cross multiply
   2,152.45x = 3,226.58 × 920.17
4. Step 4: Simplify right side
   2,152.45x = 2,969,002.12
5. Step 5: Solve for x
   x = 2,969,002.12/2,152.45
6. Step 6: Final answer
   x = 1,379.36