Finding the Fourth Proportional to 2,500.79, 3,451.30 and 1,381.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,500.79 : 3,451.30 = 1,381.83 : x
2. Step 2: Convert to fraction form
   2,500.79/3,451.30 = 1,381.83/x
3. Step 3: Cross multiply
   2,500.79x = 3,451.30 × 1,381.83
4. Step 4: Simplify right side
   2,500.79x = 4,769,102.97
5. Step 5: Solve for x
   x = 4,769,102.97/2,500.79
6. Step 6: Final answer
   x = 1,907.04