Finding the Fourth Proportional to 2,190.56, 3,278.37 and 1,705.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,190.56 : 3,278.37 = 1,705.82 : x
2. Step 2: Convert to fraction form
   2,190.56/3,278.37 = 1,705.82/x
3. Step 3: Cross multiply
   2,190.56x = 3,278.37 × 1,705.82
4. Step 4: Simplify right side
   2,190.56x = 5,592,309.11
5. Step 5: Solve for x
   x = 5,592,309.11/2,190.56
6. Step 6: Final answer
   x = 2,552.91