Finding the Fourth Proportional to 2,081.39, 2,872.78 and 1,418.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.39 : 2,872.78 = 1,418.50 : x
2. Step 2: Convert to fraction form
   2,081.39/2,872.78 = 1,418.50/x
3. Step 3: Cross multiply
   2,081.39x = 2,872.78 × 1,418.50
4. Step 4: Simplify right side
   2,081.39x = 4,075,038.43
5. Step 5: Solve for x
   x = 4,075,038.43/2,081.39
6. Step 6: Final answer
   x = 1,957.84