Finding the Fourth Proportional to 2,510.21, 3,767.63 and 1,278.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,510.21 : 3,767.63 = 1,278.50 : x
2. Step 2: Convert to fraction form
   2,510.21/3,767.63 = 1,278.50/x
3. Step 3: Cross multiply
   2,510.21x = 3,767.63 × 1,278.50
4. Step 4: Simplify right side
   2,510.21x = 4,816,914.96
5. Step 5: Solve for x
   x = 4,816,914.96/2,510.21
6. Step 6: Final answer
   x = 1,918.93