Finding the Fourth Proportional to 2,111.06, 2,913.04 and 1,226.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.06 : 2,913.04 = 1,226.68 : x
2. Step 2: Convert to fraction form
   2,111.06/2,913.04 = 1,226.68/x
3. Step 3: Cross multiply
   2,111.06x = 2,913.04 × 1,226.68
4. Step 4: Simplify right side
   2,111.06x = 3,573,367.91
5. Step 5: Solve for x
   x = 3,573,367.91/2,111.06
6. Step 6: Final answer
   x = 1,692.69