Finding the Fourth Proportional to 2,118.05, 2,922.89 and 1,267.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.05 : 2,922.89 = 1,267.88 : x
2. Step 2: Convert to fraction form
   2,118.05/2,922.89 = 1,267.88/x
3. Step 3: Cross multiply
   2,118.05x = 2,922.89 × 1,267.88
4. Step 4: Simplify right side
   2,118.05x = 3,705,861.04
5. Step 5: Solve for x
   x = 3,705,861.04/2,118.05
6. Step 6: Final answer
   x = 1,749.66