Finding the Fourth Proportional to 2,642.42, 3,964.09 and 1,181.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,642.42 : 3,964.09 = 1,181.69 : x
2. Step 2: Convert to fraction form
   2,642.42/3,964.09 = 1,181.69/x
3. Step 3: Cross multiply
   2,642.42x = 3,964.09 × 1,181.69
4. Step 4: Simplify right side
   2,642.42x = 4,684,319.82
5. Step 5: Solve for x
   x = 4,684,319.82/2,642.42
6. Step 6: Final answer
   x = 1,772.74