Finding the Fourth Proportional to 1,426.93, 2,139.58 and 695.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.93 : 2,139.58 = 695.59 : x
2. Step 2: Convert to fraction form
   1,426.93/2,139.58 = 695.59/x
3. Step 3: Cross multiply
   1,426.93x = 2,139.58 × 695.59
4. Step 4: Simplify right side
   1,426.93x = 1,488,270.45
5. Step 5: Solve for x
   x = 1,488,270.45/1,426.93
6. Step 6: Final answer
   x = 1,042.99