Finding the Fourth Proportional to 2,114.24, 3,168.92 and 1,139.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,114.24 : 3,168.92 = 1,139.00 : x
2. Step 2: Convert to fraction form
   2,114.24/3,168.92 = 1,139.00/x
3. Step 3: Cross multiply
   2,114.24x = 3,168.92 × 1,139.00
4. Step 4: Simplify right side
   2,114.24x = 3,609,386.88
5. Step 5: Solve for x
   x = 3,609,386.88/2,114.24
6. Step 6: Final answer
   x = 1,707.18