Finding the Fourth Proportional to 2,111.67, 2,914.18 and 1,227.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.67 : 2,914.18 = 1,227.76 : x
2. Step 2: Convert to fraction form
   2,111.67/2,914.18 = 1,227.76/x
3. Step 3: Cross multiply
   2,111.67x = 2,914.18 × 1,227.76
4. Step 4: Simplify right side
   2,111.67x = 3,577,903.28
5. Step 5: Solve for x
   x = 3,577,903.28/2,111.67
6. Step 6: Final answer
   x = 1,694.35