Finding the Fourth Proportional to 2,113.76, 3,169.02 and 1,292.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,113.76 : 3,169.02 = 1,292.42 : x
2. Step 2: Convert to fraction form
   2,113.76/3,169.02 = 1,292.42/x
3. Step 3: Cross multiply
   2,113.76x = 3,169.02 × 1,292.42
4. Step 4: Simplify right side
   2,113.76x = 4,095,704.83
5. Step 5: Solve for x
   x = 4,095,704.83/2,113.76
6. Step 6: Final answer
   x = 1,937.64