Finding the Fourth Proportional to 1,426.69, 1,964.01 and 1,237.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.69 : 1,964.01 = 1,237.60 : x
2. Step 2: Convert to fraction form
   1,426.69/1,964.01 = 1,237.60/x
3. Step 3: Cross multiply
   1,426.69x = 1,964.01 × 1,237.60
4. Step 4: Simplify right side
   1,426.69x = 2,430,658.78
5. Step 5: Solve for x
   x = 2,430,658.78/1,426.69
6. Step 6: Final answer
   x = 1,703.70