Finding the Fourth Proportional to 2,126.18, 2,934.90 and 1,242.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,126.18 : 2,934.90 = 1,242.72 : x
2. Step 2: Convert to fraction form
   2,126.18/2,934.90 = 1,242.72/x
3. Step 3: Cross multiply
   2,126.18x = 2,934.90 × 1,242.72
4. Step 4: Simplify right side
   2,126.18x = 3,647,258.93
5. Step 5: Solve for x
   x = 3,647,258.93/2,126.18
6. Step 6: Final answer
   x = 1,715.40