Finding the Fourth Proportional to 1,426.12, 2,136.43 and 807.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.12 : 2,136.43 = 807.93 : x
2. Step 2: Convert to fraction form
   1,426.12/2,136.43 = 807.93/x
3. Step 3: Cross multiply
   1,426.12x = 2,136.43 × 807.93
4. Step 4: Simplify right side
   1,426.12x = 1,726,085.89
5. Step 5: Solve for x
   x = 1,726,085.89/1,426.12
6. Step 6: Final answer
   x = 1,210.34