Finding the Fourth Proportional to 2,118.15, 2,922.89 and 1,173.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.15 : 2,922.89 = 1,173.83 : x
2. Step 2: Convert to fraction form
   2,118.15/2,922.89 = 1,173.83/x
3. Step 3: Cross multiply
   2,118.15x = 2,922.89 × 1,173.83
4. Step 4: Simplify right side
   2,118.15x = 3,430,955.49
5. Step 5: Solve for x
   x = 3,430,955.49/2,118.15
6. Step 6: Final answer
   x = 1,619.79