Finding the Fourth Proportional to 2,111.46, 2,913.34 and 1,226.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.46 : 2,913.34 = 1,226.80 : x
2. Step 2: Convert to fraction form
   2,111.46/2,913.34 = 1,226.80/x
3. Step 3: Cross multiply
   2,111.46x = 2,913.34 × 1,226.80
4. Step 4: Simplify right side
   2,111.46x = 3,574,085.51
5. Step 5: Solve for x
   x = 3,574,085.51/2,111.46
6. Step 6: Final answer
   x = 1,692.71