Finding the Fourth Proportional to 2,087.45, 3,131.30 and 700.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.45 : 3,131.30 = 700.73 : x
2. Step 2: Convert to fraction form
   2,087.45/3,131.30 = 700.73/x
3. Step 3: Cross multiply
   2,087.45x = 3,131.30 × 700.73
4. Step 4: Simplify right side
   2,087.45x = 2,194,181.94
5. Step 5: Solve for x
   x = 2,194,181.94/2,087.45
6. Step 6: Final answer
   x = 1,051.13