Finding the Fourth Proportional to 2,759.60, 3,808.32 and 1,580.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,759.60 : 3,808.32 = 1,580.72 : x
2. Step 2: Convert to fraction form
   2,759.60/3,808.32 = 1,580.72/x
3. Step 3: Cross multiply
   2,759.60x = 3,808.32 × 1,580.72
4. Step 4: Simplify right side
   2,759.60x = 6,019,887.59
5. Step 5: Solve for x
   x = 6,019,887.59/2,759.60
6. Step 6: Final answer
   x = 2,181.43