Finding the Fourth Proportional to 2,709.83, 4,065.65 and 1,247.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,709.83 : 4,065.65 = 1,247.88 : x
2. Step 2: Convert to fraction form
   2,709.83/4,065.65 = 1,247.88/x
3. Step 3: Cross multiply
   2,709.83x = 4,065.65 × 1,247.88
4. Step 4: Simplify right side
   2,709.83x = 5,073,443.32
5. Step 5: Solve for x
   x = 5,073,443.32/2,709.83
6. Step 6: Final answer
   x = 1,872.24