Finding the Fourth Proportional to 2,212.62, 3,320.43 and 914.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,212.62 : 3,320.43 = 914.07 : x
2. Step 2: Convert to fraction form
   2,212.62/3,320.43 = 914.07/x
3. Step 3: Cross multiply
   2,212.62x = 3,320.43 × 914.07
4. Step 4: Simplify right side
   2,212.62x = 3,035,105.45
5. Step 5: Solve for x
   x = 3,035,105.45/2,212.62
6. Step 6: Final answer
   x = 1,371.72