Finding the Fourth Proportional to 2,111.80, 2,914.24 and 1,227.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.80 : 2,914.24 = 1,227.56 : x
2. Step 2: Convert to fraction form
   2,111.80/2,914.24 = 1,227.56/x
3. Step 3: Cross multiply
   2,111.80x = 2,914.24 × 1,227.56
4. Step 4: Simplify right side
   2,111.80x = 3,577,404.45
5. Step 5: Solve for x
   x = 3,577,404.45/2,111.80
6. Step 6: Final answer
   x = 1,694.01