Finding the Fourth Proportional to 2,300.68, 3,174.87 and 1,278.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.68 : 3,174.87 = 1,278.63 : x
2. Step 2: Convert to fraction form
   2,300.68/3,174.87 = 1,278.63/x
3. Step 3: Cross multiply
   2,300.68x = 3,174.87 × 1,278.63
4. Step 4: Simplify right side
   2,300.68x = 4,059,473.90
5. Step 5: Solve for x
   x = 4,059,473.90/2,300.68
6. Step 6: Final answer
   x = 1,764.47