Finding the Fourth Proportional to 2,011.76, 2,775.49 and 1,225.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,011.76 : 2,775.49 = 1,225.52 : x
2. Step 2: Convert to fraction form
   2,011.76/2,775.49 = 1,225.52/x
3. Step 3: Cross multiply
   2,011.76x = 2,775.49 × 1,225.52
4. Step 4: Simplify right side
   2,011.76x = 3,401,401.56
5. Step 5: Solve for x
   x = 3,401,401.56/2,011.76
6. Step 6: Final answer
   x = 1,690.76