Finding the Fourth Proportional to 1,426.83, 1,969.20 and 837.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.83 : 1,969.20 = 837.42 : x
2. Step 2: Convert to fraction form
   1,426.83/1,969.20 = 837.42/x
3. Step 3: Cross multiply
   1,426.83x = 1,969.20 × 837.42
4. Step 4: Simplify right side
   1,426.83x = 1,649,047.46
5. Step 5: Solve for x
   x = 1,649,047.46/1,426.83
6. Step 6: Final answer
   x = 1,155.74