Finding the Fourth Proportional to 2,110.61, 2,912.61 and 1,166.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,110.61 : 2,912.61 = 1,166.50 : x
2. Step 2: Convert to fraction form
   2,110.61/2,912.61 = 1,166.50/x
3. Step 3: Cross multiply
   2,110.61x = 2,912.61 × 1,166.50
4. Step 4: Simplify right side
   2,110.61x = 3,397,561.02
5. Step 5: Solve for x
   x = 3,397,561.02/2,110.61
6. Step 6: Final answer
   x = 1,609.76