Finding the Fourth Proportional to 2,122.37, 2,928.89 and 1,178.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,122.37 : 2,928.89 = 1,178.18 : x
2. Step 2: Convert to fraction form
   2,122.37/2,928.89 = 1,178.18/x
3. Step 3: Cross multiply
   2,122.37x = 2,928.89 × 1,178.18
4. Step 4: Simplify right side
   2,122.37x = 3,450,752.28
5. Step 5: Solve for x
   x = 3,450,752.28/2,122.37
6. Step 6: Final answer
   x = 1,625.89