Finding the Fourth Proportional to 1,621.69, 2,239.79 and 1,096.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621.69 : 2,239.79 = 1,096.81 : x
2. Step 2: Convert to fraction form
   1,621.69/2,239.79 = 1,096.81/x
3. Step 3: Cross multiply
   1,621.69x = 2,239.79 × 1,096.81
4. Step 4: Simplify right side
   1,621.69x = 2,456,612.99
5. Step 5: Solve for x
   x = 2,456,612.99/1,621.69
6. Step 6: Final answer
   x = 1,514.85