Finding the Fourth Proportional to 2,111.04, 2,913.24 and 1,166.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.04 : 2,913.24 = 1,166.90 : x
2. Step 2: Convert to fraction form
   2,111.04/2,913.24 = 1,166.90/x
3. Step 3: Cross multiply
   2,111.04x = 2,913.24 × 1,166.90
4. Step 4: Simplify right side
   2,111.04x = 3,399,459.76
5. Step 5: Solve for x
   x = 3,399,459.76/2,111.04
6. Step 6: Final answer
   x = 1,610.32