Finding the Fourth Proportional to 2,011.60, 3,016.76 and 712.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,011.60 : 3,016.76 = 712.76 : x
2. Step 2: Convert to fraction form
   2,011.60/3,016.76 = 712.76/x
3. Step 3: Cross multiply
   2,011.60x = 3,016.76 × 712.76
4. Step 4: Simplify right side
   2,011.60x = 2,150,225.86
5. Step 5: Solve for x
   x = 2,150,225.86/2,011.60
6. Step 6: Final answer
   x = 1,068.91