Finding the Fourth Proportional to 2,112.84, 2,915.58 and 1,181.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.84 : 2,915.58 = 1,181.16 : x
2. Step 2: Convert to fraction form
   2,112.84/2,915.58 = 1,181.16/x
3. Step 3: Cross multiply
   2,112.84x = 2,915.58 × 1,181.16
4. Step 4: Simplify right side
   2,112.84x = 3,443,766.47
5. Step 5: Solve for x
   x = 3,443,766.47/2,112.84
6. Step 6: Final answer
   x = 1,629.92