Finding the Fourth Proportional to 1,779.54, 2,651.82 and 1,720.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,779.54 : 2,651.82 = 1,720.82 : x
2. Step 2: Convert to fraction form
   1,779.54/2,651.82 = 1,720.82/x
3. Step 3: Cross multiply
   1,779.54x = 2,651.82 × 1,720.82
4. Step 4: Simplify right side
   1,779.54x = 4,563,304.89
5. Step 5: Solve for x
   x = 4,563,304.89/1,779.54
6. Step 6: Final answer
   x = 2,564.32