Finding the Fourth Proportional to 2,086.03, 3,130.85 and 1,086.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.03 : 3,130.85 = 1,086.09 : x
2. Step 2: Convert to fraction form
   2,086.03/3,130.85 = 1,086.09/x
3. Step 3: Cross multiply
   2,086.03x = 3,130.85 × 1,086.09
4. Step 4: Simplify right side
   2,086.03x = 3,400,384.88
5. Step 5: Solve for x
   x = 3,400,384.88/2,086.03
6. Step 6: Final answer
   x = 1,630.07