Finding the Fourth Proportional to 2,111.84, 2,914.32 and 1,180.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.84 : 2,914.32 = 1,180.40 : x
2. Step 2: Convert to fraction form
   2,111.84/2,914.32 = 1,180.40/x
3. Step 3: Cross multiply
   2,111.84x = 2,914.32 × 1,180.40
4. Step 4: Simplify right side
   2,111.84x = 3,440,063.33
5. Step 5: Solve for x
   x = 3,440,063.33/2,111.84
6. Step 6: Final answer
   x = 1,628.94