Finding the Fourth Proportional to 1,426.96, 2,136.30 and 877.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.96 : 2,136.30 = 877.48 : x
2. Step 2: Convert to fraction form
   1,426.96/2,136.30 = 877.48/x
3. Step 3: Cross multiply
   1,426.96x = 2,136.30 × 877.48
4. Step 4: Simplify right side
   1,426.96x = 1,874,560.52
5. Step 5: Solve for x
   x = 1,874,560.52/1,426.96
6. Step 6: Final answer
   x = 1,313.67