Finding the Fourth Proportional to 2,709.72, 4,063.14 and 1,247.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,709.72 : 4,063.14 = 1,247.63 : x
2. Step 2: Convert to fraction form
   2,709.72/4,063.14 = 1,247.63/x
3. Step 3: Cross multiply
   2,709.72x = 4,063.14 × 1,247.63
4. Step 4: Simplify right side
   2,709.72x = 5,069,275.04
5. Step 5: Solve for x
   x = 5,069,275.04/2,709.72
6. Step 6: Final answer
   x = 1,870.77