Finding the Fourth Proportional to 2,641.56, 3,961.98 and 1,180.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.56 : 3,961.98 = 1,180.32 : x
2. Step 2: Convert to fraction form
   2,641.56/3,961.98 = 1,180.32/x
3. Step 3: Cross multiply
   2,641.56x = 3,961.98 × 1,180.32
4. Step 4: Simplify right side
   2,641.56x = 4,676,404.23
5. Step 5: Solve for x
   x = 4,676,404.23/2,641.56
6. Step 6: Final answer
   x = 1,770.32