Finding the Fourth Proportional to 2,510.74, 3,769.56 and 1,278.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,510.74 : 3,769.56 = 1,278.98 : x
2. Step 2: Convert to fraction form
   2,510.74/3,769.56 = 1,278.98/x
3. Step 3: Cross multiply
   2,510.74x = 3,769.56 × 1,278.98
4. Step 4: Simplify right side
   2,510.74x = 4,821,191.85
5. Step 5: Solve for x
   x = 4,821,191.85/2,510.74
6. Step 6: Final answer
   x = 1,920.23