Finding the Fourth Proportional to 2,087.72, 3,131.93 and 701.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.72 : 3,131.93 = 701.18 : x
2. Step 2: Convert to fraction form
   2,087.72/3,131.93 = 701.18/x
3. Step 3: Cross multiply
   2,087.72x = 3,131.93 × 701.18
4. Step 4: Simplify right side
   2,087.72x = 2,196,062.13
5. Step 5: Solve for x
   x = 2,196,062.13/2,087.72
6. Step 6: Final answer
   x = 1,051.90