Finding the Fourth Proportional to 2,185.58, 3,278.55 and 1,314.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.58 : 3,278.55 = 1,314.05 : x
2. Step 2: Convert to fraction form
   2,185.58/3,278.55 = 1,314.05/x
3. Step 3: Cross multiply
   2,185.58x = 3,278.55 × 1,314.05
4. Step 4: Simplify right side
   2,185.58x = 4,308,162.23
5. Step 5: Solve for x
   x = 4,308,162.23/2,185.58
6. Step 6: Final answer
   x = 1,971.18