Finding the Fourth Proportional to 2,761.50, 3,811.05 and 1,550.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,761.50 : 3,811.05 = 1,550.30 : x
2. Step 2: Convert to fraction form
   2,761.50/3,811.05 = 1,550.30/x
3. Step 3: Cross multiply
   2,761.50x = 3,811.05 × 1,550.30
4. Step 4: Simplify right side
   2,761.50x = 5,908,251.76
5. Step 5: Solve for x
   x = 5,908,251.76/2,761.50
6. Step 6: Final answer
   x = 2,139.51