Finding the Fourth Proportional to 2,111.72, 2,914.13 and 1,180.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.72 : 2,914.13 = 1,180.22 : x
2. Step 2: Convert to fraction form
   2,111.72/2,914.13 = 1,180.22/x
3. Step 3: Cross multiply
   2,111.72x = 2,914.13 × 1,180.22
4. Step 4: Simplify right side
   2,111.72x = 3,439,312.64
5. Step 5: Solve for x
   x = 3,439,312.64/2,111.72
6. Step 6: Final answer
   x = 1,628.68