Finding the Fourth Proportional to 2,087.56, 3,131.23 and 700.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.56 : 3,131.23 = 700.91 : x
2. Step 2: Convert to fraction form
   2,087.56/3,131.23 = 700.91/x
3. Step 3: Cross multiply
   2,087.56x = 3,131.23 × 700.91
4. Step 4: Simplify right side
   2,087.56x = 2,194,691.26
5. Step 5: Solve for x
   x = 2,194,691.26/2,087.56
6. Step 6: Final answer
   x = 1,051.32