Finding the Fourth Proportional to 2,111.52, 2,913.41 and 1,226.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.52 : 2,913.41 = 1,226.79 : x
2. Step 2: Convert to fraction form
   2,111.52/2,913.41 = 1,226.79/x
3. Step 3: Cross multiply
   2,111.52x = 2,913.41 × 1,226.79
4. Step 4: Simplify right side
   2,111.52x = 3,574,136.12
5. Step 5: Solve for x
   x = 3,574,136.12/2,111.52
6. Step 6: Final answer
   x = 1,692.68