Finding the Fourth Proportional to 2,009.43, 3,015.01 and 777.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,009.43 : 3,015.01 = 777.71 : x
2. Step 2: Convert to fraction form
   2,009.43/3,015.01 = 777.71/x
3. Step 3: Cross multiply
   2,009.43x = 3,015.01 × 777.71
4. Step 4: Simplify right side
   2,009.43x = 2,344,784.46
5. Step 5: Solve for x
   x = 2,344,784.46/2,009.43
6. Step 6: Final answer
   x = 1,166.89