Finding the Fourth Proportional to 2,141.93, 3,213.35 and 909.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141.93 : 3,213.35 = 909.32 : x
2. Step 2: Convert to fraction form
   2,141.93/3,213.35 = 909.32/x
3. Step 3: Cross multiply
   2,141.93x = 3,213.35 × 909.32
4. Step 4: Simplify right side
   2,141.93x = 2,921,951.33
5. Step 5: Solve for x
   x = 2,921,951.33/2,141.93
6. Step 6: Final answer
   x = 1,364.17