Finding the Fourth Proportional to 2,021.59, 2,785.69 and 1,549.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021.59 : 2,785.69 = 1,549.50 : x
2. Step 2: Convert to fraction form
   2,021.59/2,785.69 = 1,549.50/x
3. Step 3: Cross multiply
   2,021.59x = 2,785.69 × 1,549.50
4. Step 4: Simplify right side
   2,021.59x = 4,316,408.85
5. Step 5: Solve for x
   x = 4,316,408.85/2,021.59
6. Step 6: Final answer
   x = 2,135.16