Finding the Fourth Proportional to 2,087.47, 3,113.60 and 1,775.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.47 : 3,113.60 = 1,775.85 : x
2. Step 2: Convert to fraction form
   2,087.47/3,113.60 = 1,775.85/x
3. Step 3: Cross multiply
   2,087.47x = 3,113.60 × 1,775.85
4. Step 4: Simplify right side
   2,087.47x = 5,529,286.56
5. Step 5: Solve for x
   x = 5,529,286.56/2,087.47
6. Step 6: Final answer
   x = 2,648.80