Finding the Fourth Proportional to 1,919.10, 2,647.06 and 1,550.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,919.10 : 2,647.06 = 1,550.05 : x
2. Step 2: Convert to fraction form
   1,919.10/2,647.06 = 1,550.05/x
3. Step 3: Cross multiply
   1,919.10x = 2,647.06 × 1,550.05
4. Step 4: Simplify right side
   1,919.10x = 4,103,075.35
5. Step 5: Solve for x
   x = 4,103,075.35/1,919.10
6. Step 6: Final answer
   x = 2,138.02