Finding the Fourth Proportional to 2,091.04, 3,137.77 and 859.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.04 : 3,137.77 = 859.33 : x
2. Step 2: Convert to fraction form
   2,091.04/3,137.77 = 859.33/x
3. Step 3: Cross multiply
   2,091.04x = 3,137.77 × 859.33
4. Step 4: Simplify right side
   2,091.04x = 2,696,384.89
5. Step 5: Solve for x
   x = 2,696,384.89/2,091.04
6. Step 6: Final answer
   x = 1,289.50