Finding the Fourth Proportional to 1,426.86, 2,140.71 and 696.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.86 : 2,140.71 = 696.51 : x
2. Step 2: Convert to fraction form
   1,426.86/2,140.71 = 696.51/x
3. Step 3: Cross multiply
   1,426.86x = 2,140.71 × 696.51
4. Step 4: Simplify right side
   1,426.86x = 1,491,025.92
5. Step 5: Solve for x
   x = 1,491,025.92/1,426.86
6. Step 6: Final answer
   x = 1,044.97