Finding the Fourth Proportional to 2,091.23, 2,885.81 and 1,146.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.23 : 2,885.81 = 1,146.99 : x
2. Step 2: Convert to fraction form
   2,091.23/2,885.81 = 1,146.99/x
3. Step 3: Cross multiply
   2,091.23x = 2,885.81 × 1,146.99
4. Step 4: Simplify right side
   2,091.23x = 3,309,998.08
5. Step 5: Solve for x
   x = 3,309,998.08/2,091.23
6. Step 6: Final answer
   x = 1,582.80