Finding the Fourth Proportional to 2,086.01, 3,129.93 and 1,111.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.01 : 3,129.93 = 1,111.88 : x
2. Step 2: Convert to fraction form
   2,086.01/3,129.93 = 1,111.88/x
3. Step 3: Cross multiply
   2,086.01x = 3,129.93 × 1,111.88
4. Step 4: Simplify right side
   2,086.01x = 3,480,090.92
5. Step 5: Solve for x
   x = 3,480,090.92/2,086.01
6. Step 6: Final answer
   x = 1,668.30