Finding the Fourth Proportional to 1,779.01, 2,661.82 and 1,685.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,779.01 : 2,661.82 = 1,685.25 : x
2. Step 2: Convert to fraction form
   1,779.01/2,661.82 = 1,685.25/x
3. Step 3: Cross multiply
   1,779.01x = 2,661.82 × 1,685.25
4. Step 4: Simplify right side
   1,779.01x = 4,485,832.16
5. Step 5: Solve for x
   x = 4,485,832.16/1,779.01
6. Step 6: Final answer
   x = 2,521.53