Finding the Fourth Proportional to 1,407.94, 2,105.61 and 1,096.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407.94 : 2,105.61 = 1,096.18 : x
2. Step 2: Convert to fraction form
   1,407.94/2,105.61 = 1,096.18/x
3. Step 3: Cross multiply
   1,407.94x = 2,105.61 × 1,096.18
4. Step 4: Simplify right side
   1,407.94x = 2,308,127.57
5. Step 5: Solve for x
   x = 2,308,127.57/1,407.94
6. Step 6: Final answer
   x = 1,639.37