Finding the Fourth Proportional to 2,273.42, 3,137.33 and 1,278.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,273.42 : 3,137.33 = 1,278.69 : x
2. Step 2: Convert to fraction form
   2,273.42/3,137.33 = 1,278.69/x
3. Step 3: Cross multiply
   2,273.42x = 3,137.33 × 1,278.69
4. Step 4: Simplify right side
   2,273.42x = 4,011,656.81
5. Step 5: Solve for x
   x = 4,011,656.81/2,273.42
6. Step 6: Final answer
   x = 1,764.60