Finding the Fourth Proportional to 2,017.74, 2,785.78 and 1,645.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.74 : 2,785.78 = 1,645.60 : x
2. Step 2: Convert to fraction form
   2,017.74/2,785.78 = 1,645.60/x
3. Step 3: Cross multiply
   2,017.74x = 2,785.78 × 1,645.60
4. Step 4: Simplify right side
   2,017.74x = 4,584,279.57
5. Step 5: Solve for x
   x = 4,584,279.57/2,017.74
6. Step 6: Final answer
   x = 2,271.99