Finding the Fourth Proportional to 1,426.89, 2,140.62 and 696.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.89 : 2,140.62 = 696.48 : x
2. Step 2: Convert to fraction form
   1,426.89/2,140.62 = 696.48/x
3. Step 3: Cross multiply
   1,426.89x = 2,140.62 × 696.48
4. Step 4: Simplify right side
   1,426.89x = 1,490,899.02
5. Step 5: Solve for x
   x = 1,490,899.02/1,426.89
6. Step 6: Final answer
   x = 1,044.86