Finding the Fourth Proportional to 2,218.56, 3,062.72 and 1,720.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,218.56 : 3,062.72 = 1,720.08 : x
2. Step 2: Convert to fraction form
   2,218.56/3,062.72 = 1,720.08/x
3. Step 3: Cross multiply
   2,218.56x = 3,062.72 × 1,720.08
4. Step 4: Simplify right side
   2,218.56x = 5,268,123.42
5. Step 5: Solve for x
   x = 5,268,123.42/2,218.56
6. Step 6: Final answer
   x = 2,374.57