Finding the Fourth Proportional to 2,185.60, 3,272.76 and 1,210.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.60 : 3,272.76 = 1,210.56 : x
2. Step 2: Convert to fraction form
   2,185.60/3,272.76 = 1,210.56/x
3. Step 3: Cross multiply
   2,185.60x = 3,272.76 × 1,210.56
4. Step 4: Simplify right side
   2,185.60x = 3,961,872.35
5. Step 5: Solve for x
   x = 3,961,872.35/2,185.60
6. Step 6: Final answer
   x = 1,812.72