Finding the Fourth Proportional to 2,142.25, 2,956.37 and 1,291.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.25 : 2,956.37 = 1,291.95 : x
2. Step 2: Convert to fraction form
   2,142.25/2,956.37 = 1,291.95/x
3. Step 3: Cross multiply
   2,142.25x = 2,956.37 × 1,291.95
4. Step 4: Simplify right side
   2,142.25x = 3,819,475.76
5. Step 5: Solve for x
   x = 3,819,475.76/2,142.25
6. Step 6: Final answer
   x = 1,782.93