Finding the Fourth Proportional to 2,091.99, 2,887.47 and 1,208.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.99 : 2,887.47 = 1,208.34 : x
2. Step 2: Convert to fraction form
   2,091.99/2,887.47 = 1,208.34/x
3. Step 3: Cross multiply
   2,091.99x = 2,887.47 × 1,208.34
4. Step 4: Simplify right side
   2,091.99x = 3,489,045.50
5. Step 5: Solve for x
   x = 3,489,045.50/2,091.99
6. Step 6: Final answer
   x = 1,667.81