Finding the Fourth Proportional to 2,112.69, 2,915.51 and 1,181.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.69 : 2,915.51 = 1,181.19 : x
2. Step 2: Convert to fraction form
   2,112.69/2,915.51 = 1,181.19/x
3. Step 3: Cross multiply
   2,112.69x = 2,915.51 × 1,181.19
4. Step 4: Simplify right side
   2,112.69x = 3,443,771.26
5. Step 5: Solve for x
   x = 3,443,771.26/2,112.69
6. Step 6: Final answer
   x = 1,630.04