Finding the Fourth Proportional to 1,426.16, 2,140.61 and 696.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.16 : 2,140.61 = 696.25 : x
2. Step 2: Convert to fraction form
   1,426.16/2,140.61 = 696.25/x
3. Step 3: Cross multiply
   1,426.16x = 2,140.61 × 696.25
4. Step 4: Simplify right side
   1,426.16x = 1,490,399.71
5. Step 5: Solve for x
   x = 1,490,399.71/1,426.16
6. Step 6: Final answer
   x = 1,045.04