Finding the Fourth Proportional to 2,161.83, 3,240.32 and 929.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,161.83 : 3,240.32 = 929.82 : x
2. Step 2: Convert to fraction form
   2,161.83/3,240.32 = 929.82/x
3. Step 3: Cross multiply
   2,161.83x = 3,240.32 × 929.82
4. Step 4: Simplify right side
   2,161.83x = 3,012,909.69
5. Step 5: Solve for x
   x = 3,012,909.69/2,161.83
6. Step 6: Final answer
   x = 1,393.68