Finding the Fourth Proportional to 2,111.89, 2,914.47 and 1,180.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.89 : 2,914.47 = 1,180.39 : x
2. Step 2: Convert to fraction form
   2,111.89/2,914.47 = 1,180.39/x
3. Step 3: Cross multiply
   2,111.89x = 2,914.47 × 1,180.39
4. Step 4: Simplify right side
   2,111.89x = 3,440,211.24
5. Step 5: Solve for x
   x = 3,440,211.24/2,111.89
6. Step 6: Final answer
   x = 1,628.97