Finding the Fourth Proportional to 2,642.12, 3,962.13 and 1,180.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,642.12 : 3,962.13 = 1,180.28 : x
2. Step 2: Convert to fraction form
   2,642.12/3,962.13 = 1,180.28/x
3. Step 3: Cross multiply
   2,642.12x = 3,962.13 × 1,180.28
4. Step 4: Simplify right side
   2,642.12x = 4,676,422.80
5. Step 5: Solve for x
   x = 4,676,422.80/2,642.12
6. Step 6: Final answer
   x = 1,769.95