Finding the Fourth Proportional to 2,129.52, 2,938.72 and 1,185.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,129.52 : 2,938.72 = 1,185.29 : x
2. Step 2: Convert to fraction form
   2,129.52/2,938.72 = 1,185.29/x
3. Step 3: Cross multiply
   2,129.52x = 2,938.72 × 1,185.29
4. Step 4: Simplify right side
   2,129.52x = 3,483,247.54
5. Step 5: Solve for x
   x = 3,483,247.54/2,129.52
6. Step 6: Final answer
   x = 1,635.69