Finding the Fourth Proportional to 1,119.95, 1,671.46 and 1,090.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,119.95 : 1,671.46 = 1,090.79 : x
2. Step 2: Convert to fraction form
   1,119.95/1,671.46 = 1,090.79/x
3. Step 3: Cross multiply
   1,119.95x = 1,671.46 × 1,090.79
4. Step 4: Simplify right side
   1,119.95x = 1,823,222.57
5. Step 5: Solve for x
   x = 1,823,222.57/1,119.95
6. Step 6: Final answer
   x = 1,627.94