Finding the Fourth Proportional to 1,580.82, 2,168.65 and 1,486.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,580.82 : 2,168.65 = 1,486.59 : x
2. Step 2: Convert to fraction form
   1,580.82/2,168.65 = 1,486.59/x
3. Step 3: Cross multiply
   1,580.82x = 2,168.65 × 1,486.59
4. Step 4: Simplify right side
   1,580.82x = 3,223,893.40
5. Step 5: Solve for x
   x = 3,223,893.40/1,580.82
6. Step 6: Final answer
   x = 2,039.38