Finding the Fourth Proportional to 2,141.87, 3,212.00 and 909.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141.87 : 3,212.00 = 909.37 : x
2. Step 2: Convert to fraction form
   2,141.87/3,212.00 = 909.37/x
3. Step 3: Cross multiply
   2,141.87x = 3,212.00 × 909.37
4. Step 4: Simplify right side
   2,141.87x = 2,920,899.32
5. Step 5: Solve for x
   x = 2,920,899.32/2,141.87
6. Step 6: Final answer
   x = 1,363.72