Finding the Fourth Proportional to 2,011.92, 2,776.59 and 1,225.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,011.92 : 2,776.59 = 1,225.86 : x
2. Step 2: Convert to fraction form
   2,011.92/2,776.59 = 1,225.86/x
3. Step 3: Cross multiply
   2,011.92x = 2,776.59 × 1,225.86
4. Step 4: Simplify right side
   2,011.92x = 3,403,710.62
5. Step 5: Solve for x
   x = 3,403,710.62/2,011.92
6. Step 6: Final answer
   x = 1,691.77