Finding the Fourth Proportional to 2,112.58, 2,915.35 and 1,181.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.58 : 2,915.35 = 1,181.08 : x
2. Step 2: Convert to fraction form
   2,112.58/2,915.35 = 1,181.08/x
3. Step 3: Cross multiply
   2,112.58x = 2,915.35 × 1,181.08
4. Step 4: Simplify right side
   2,112.58x = 3,443,251.34
5. Step 5: Solve for x
   x = 3,443,251.34/2,112.58
6. Step 6: Final answer
   x = 1,629.88