Finding the Fourth Proportional to 2,510.22, 3,463.89 and 1,390.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,510.22 : 3,463.89 = 1,390.86 : x
2. Step 2: Convert to fraction form
   2,510.22/3,463.89 = 1,390.86/x
3. Step 3: Cross multiply
   2,510.22x = 3,463.89 × 1,390.86
4. Step 4: Simplify right side
   2,510.22x = 4,817,786.05
5. Step 5: Solve for x
   x = 4,817,786.05/2,510.22
6. Step 6: Final answer
   x = 1,919.27