Finding the Fourth Proportional to 2,124.72, 2,931.89 and 1,180.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,124.72 : 2,931.89 = 1,180.43 : x
2. Step 2: Convert to fraction form
   2,124.72/2,931.89 = 1,180.43/x
3. Step 3: Cross multiply
   2,124.72x = 2,931.89 × 1,180.43
4. Step 4: Simplify right side
   2,124.72x = 3,460,890.91
5. Step 5: Solve for x
   x = 3,460,890.91/2,124.72
6. Step 6: Final answer
   x = 1,628.87