Finding the Fourth Proportional to 2,580.07, 3,561.81 and 1,636.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.07 : 3,561.81 = 1,636.83 : x
2. Step 2: Convert to fraction form
   2,580.07/3,561.81 = 1,636.83/x
3. Step 3: Cross multiply
   2,580.07x = 3,561.81 × 1,636.83
4. Step 4: Simplify right side
   2,580.07x = 5,830,077.46
5. Step 5: Solve for x
   x = 5,830,077.46/2,580.07
6. Step 6: Final answer
   x = 2,259.66