Finding the Fourth Proportional to 1,912.36, 2,638.27 and 1,166.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,912.36 : 2,638.27 = 1,166.05 : x
2. Step 2: Convert to fraction form
   1,912.36/2,638.27 = 1,166.05/x
3. Step 3: Cross multiply
   1,912.36x = 2,638.27 × 1,166.05
4. Step 4: Simplify right side
   1,912.36x = 3,076,354.73
5. Step 5: Solve for x
   x = 3,076,354.73/1,912.36
6. Step 6: Final answer
   x = 1,608.67