Finding the Fourth Proportional to 2,181.60, 3,258.72 and 1,853.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,181.60 : 3,258.72 = 1,853.46 : x
2. Step 2: Convert to fraction form
   2,181.60/3,258.72 = 1,853.46/x
3. Step 3: Cross multiply
   2,181.60x = 3,258.72 × 1,853.46
4. Step 4: Simplify right side
   2,181.60x = 6,039,907.17
5. Step 5: Solve for x
   x = 6,039,907.17/2,181.60
6. Step 6: Final answer
   x = 2,768.57