Finding the Fourth Proportional to 2,111.63, 2,913.77 and 1,227.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.63 : 2,913.77 = 1,227.11 : x
2. Step 2: Convert to fraction form
   2,111.63/2,913.77 = 1,227.11/x
3. Step 3: Cross multiply
   2,111.63x = 2,913.77 × 1,227.11
4. Step 4: Simplify right side
   2,111.63x = 3,575,504.80
5. Step 5: Solve for x
   x = 3,575,504.80/2,111.63
6. Step 6: Final answer
   x = 1,693.25